Question

The radius of a coin is 0.8 cm.calculate its area . for class

Answer 1

Answer:

The area of the circle is 243.28

Step-by-step explanation:

Step 1 : use the formula area of the circle That is A = \pi r^2

Step 2:substitute the value of r that is 0.8 cm

Step  3: you will get the answer that is 243.28

Hope it helps

Answer 2

Answer:

0.00020096 m^2 or 2.0096 cm^2

Step-by-step explanation:

Radius of the coin = 0.8cm = 0.008m

Area of the circle = $\pi$r^2

Therefore, 22/7 * 8/1000 * 8/1000    ( \pi = 22/7)

Area = 0.00020096 m^2 or 2.0096 cm^2