Question

Suppose the diameter of a circle is 10. What is its area?

Answer 1

Question: Suppose the diameter of a circle is 10. What is its area?

The area of a circle is given by the formula,

A = πR^2

or

A = πD^2/4

Where R is the radius

or D is the diameter.

We have D = 10.

Hence A = πD^2/4 = π(10)^2/4 = 100π/4 = 25π

Answer: Area = square units

Answer 2

Diameter of a circle=10

or,2r=10[since,diameter=2*radius]

or,r=5 unit

Area of the circle=pye r^2 unit^2

                         =pye 5^2   unit^2

                         =25 pye  unit^2

Answer 3

25π unit^2