Radius of two circles are 240 cm and 7 cm. Thus, area of two circles = pi x (24) 2 + pi (7) 2 = pi x (576 + 49) Find the Circumference circle (7cm) The circumference of a circle is equal to Pi times the diameter . Since the diameter is equal to times the radius , the formula for circumference using radius is . Related Surface Area Calculator | Volume Calculator. Area is a quantity that describes the size or extent of a two-dimensional figure or shape in a plane. It can be visualized as the amount of paint that would be necessary to cover a surface, and is the two-dimensional counterpart of the one-dimensional length of a curve, and three-dimensional volume of a solid. Calculate the radius of a circle whose area is 154 cm² . Therefore, the radius of the circle is 7cm. Share. Tweet. Reddit. Pinterest. Email. Prev Article. Next Article . Circumference to Diameter Calculator. This circumference to diameter calculator is used to find the diameter of a circle given its circumference. Just enter the value of the circumference. Then tap or click the Calculate button. Get the result. You can also select units of measure for both input data and results. Virtuoso. R of circle whose d is 7cm = 7/2 cm. Area of circle = 7×7×22÷7×2×2 = 77/2 cm^2. Area of 2nd circle = 77×16÷2 = 616 cm^2. pi R^2 = 616 cm^2. R^2 = 616 ×7÷22 = 28×7 = 196. R = 14 cm. Find the area of a half circle with semicircle area calculator With this semicircle area calculator, you can quickly find the area of half of a circle . What is more, the tool also doubles as a semicircle perimeter calculator , so inputting radius or diameter will help you find the basic features of the shape in the blink of an eye. The area of a circle is given by formula: πr2. Where, π has a constant value of ≈ 3.14. and r denotes the radius. The radius of the circle is half the diameter = d 2 = 7 2 = 3.5cm. The area = πr2 ≈ 3.14× (3.5)2. = 3.14 ×(12.25) = 38.465 cm2. Radius of two circles are 240 cm and 7 cm. Thus, area of two circles = pi x (24) 2 + pi (7) 2 = pi x (576 + 49) A circle of radius = 7 or diameter = 14 or circumference = 43.98 cm has an area of: 1.5398 × 10 0 square kilometers (km²) 0.01539 square meters (m²) 153.9 square centimeters (cm²) Use 3.14 for pi to calculate the area of a circle when its diameter is given. Take a quiz at this link: http://www.mrmaisonet.com/index.php?/Area-Quizzes/Are... Find the area of a circle whose radius is 7 cm, giving your answer in terms of π. b Find the area of a circle whose diameter is 7 cm, using the approximate π ≈ . c Find the area of a circle whose whose radius is 30 cm , using the approximation π ≈ 3.14. Solution Radius of two circles are 240 cm and 7 cm. Thus, area of two circles = pi x (24) 2 + pi (7) 2 = pi x (576 + 49) Answer: diameter = 7.7 CM. therefore radious = 7.7/2. now circumference = 2πr. => 2× 22/7×7.7 /2. => 28.8 CM. hope it helps... mark as BEST..... ty. 5.0. Since the formula of area of a circle is A=pi r^2 and the diameter is 156 so divide that by 2 and the radius is 78. 78 squared is 6,084 then you times that by pi (3.14 simplified) which is 19,103.76. so final answer is 19,103.76 The radius is half the diameter. Area = π * (Diameter / 2)2. Answer: diameter = 7.7 CM. therefore radious = 7.7/2. now circumference = 2πr. => 2× 22/7×7.7 /2. => 28.8 CM. hope it helps... mark as BEST..... ty. 5.0. Since the formula of area of a circle is A=pi r^2 and the diameter is 156 so divide that by 2 and the radius is 78. 78 squared is 6,084 then you times that by pi (3.14 simplified) which is 19,103.76. so final answer is 19,103.76 I go through two examples, one given the radius, and another given the diameter Area of a Circle Calculator. Enter the radius, diameter, circumference or area of a Circle to find the other three. The calculations are done "live": How to Calculate the Area. The area of a circle is: Area of a Circle Calculator. Enter the radius, diameter, circumference or area of a Circle to find the other three. The calculations are done "live": How to Calculate the Area. The area of a circle is: Jul 09, 2020 · Plug the given value of the diameter into the formula and solve. Example problem: You have a circle tub with a diameter of 8 feet, and you want to build a white fence that creates a 6-foot wide space around the tub. To find the circumference of the fence that has to be created, you should first find the diameter of the tub and the fence which will be 8 feet + 6 feet + 6 feet, which will acc The radius of a circle calculator uses the following area of a circle formula: Area of a circle = π * r 2. Area of a circle diameter. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. Where: π is approximately equal to 3.14. It doesn't matter whether you want to find the area of a circle using ... The radius of a circle calculator uses the following area of a circle formula: Area of a circle = π * r 2. Area of a circle diameter. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. Where: π is approximately equal to 3.14. It doesn't matter whether you want to find the area of a circle using ... Jul 03, 2020 · How to Calculate the Area of a Sector of a Circle. The total area of a circle is πR 2 corresponding to an angle of 2π radians for the full circle. If the angle is θ, then this is θ/2π the fraction of the full angle for a circle. So the area of the sector is this fraction multiplied by the total area of the circle. or (θ/2π) x (πR 2 ... Jul 03, 2020 · How to Calculate the Area of a Sector of a Circle. The total area of a circle is πR 2 corresponding to an angle of 2π radians for the full circle. If the angle is θ, then this is θ/2π the fraction of the full angle for a circle. So the area of the sector is this fraction multiplied by the total area of the circle. or (θ/2π) x (πR 2 ... Circumference to Diameter Calculator. This circumference to diameter calculator is used to find the diameter of a circle given its circumference. Just enter the value of the circumference. Then tap or click the Calculate button. Get the result. You can also select units of measure for both input data and results. A circle of radius = 7 or diameter = 14 or circumference = 43.98 cm has an area of: 1.5398 × 10 0 square kilometers (km²) 0.01539 square meters (m²) 153.9 square centimeters (cm²) Circumference of the circle = 2πr cm. Given, Circumference of a cicle = 44cm. Therefore, 2πr = 44 (from above) r = 7cm. Diameter of the circle = 2r = (2 x 7)cm = 14cm. Hence, the Diameter of the circle is 14 cm. Question 2. Find the diameter of the circle whose circumference is 132 cm? Explanation. Let, the radius of the given circle be r cm ... Related Surface Area Calculator | Volume Calculator. Area is a quantity that describes the size or extent of a two-dimensional figure or shape in a plane. It can be visualized as the amount of paint that would be necessary to cover a surface, and is the two-dimensional counterpart of the one-dimensional length of a curve, and three-dimensional volume of a solid.