Question

A circular coaster has a diameter of 5 inches. What is it’s area? Write using pi. Show your work.

Answer 1

Answer:

A= 19.625

Step-by-step explanation:

A= πr²

A= (3.14) 2.5^2

A= 19.625

Answer 2

Diameter = 5in.

Radius = 5/2in.

Area of a circle

$= \pi {r}^{2}$

$= \pi \times ( { \frac{5}{2}) }^{2}$

$= \pi \times \frac{25}{4}$

$= \frac{25}{4} \pi$

$= 6.25\pi$