Question

Find the area/radius

1.) r=1.2cm
2.)d=8m
3.)r=5m

Answer 1

1. Area= 4.52 cm²

2. radius=4 m Area =50.27 m²

3.Area = 78.54 m²

Explanation:

Note:

Radius is half of the diameter.

The area of the circle is given by:

• πr² where r is radius and radius is given.
• ¼*πd² where d is diameter and diameter is given.

For question:

1. r=1.2 cm

Now,

Area =π*1.2²=4.52 cm²

2.

d=8m

r=½*d=8/2=4 m

Area =π*4²=50.27m²

3.

r=5m

Area =π*5²=78.54 m²