Question

The diameter of a circle is 26 meters. What is the circle's area?

Answer 1

Step-by-step explanation:

Area of a circle is πr²

Diameter= 2r

Given diameter= 26

26= 2r

Dividing both sides by 2,

26÷2 = r

13 = r

Therefore, radius(r) = 13

Put r=3 into the formula for area of a circle

A = πr²

But π = 22/7

A = (22/7)(13)²

A = 3718/7

A = 531.143

Therefore, the circle's area is 531.143m²

Answer 2

Answer:

Step-by-step explanation:

Given that the equation for the area of a circle is A = pi * r^2

where r is the radius there are only two steps to solving this.

Find the radius and plug it in.

Since the radius is half of the diameter, we can divide 26 by 2

knowing that r = 13, plug it in.

A = pi * 13^2

approximately, 3.141 * 169 = 530.829