Find the area of a circle with the radius

find the area

100

²What is the area of a circle if the radius is 3cm²

28.26cm²

200

Find the area of a circle with a radius of 5cm²

78.5 cm²

300

find the area of a circle with a radius of 10 inches²

314 inches²

400

Find the area of a circle with a radius of 1.5 cm

7.065cm squared

500

Find the area of a circle with a radius of 7 cm ²

153.86cm²

compute the exponent

100

8²

64

200

9²

81

300

12²

144

400

15²

225

500

7²

49

challenge

100

What is the formula for the area of a circle 

a=π x r²

200

What is the decimal number for pi

3.14

300

What is the product of 3.14 X 4²

50.24

400

What is the definition of radius

a straight line segment from the center of a circle to any point of the circle.

500

what is the product of 3.14 x 13²

530.66