Question

Find the surface area of a sphere with a diameter 12 cm. Round your answer to the nearest whole number.

a.
768 sq. cm
c.
314 sq. cm
b.
452 sq. cm
d.
154 sq.cm

Answer 1

144*pi cm^2

Explanation:

The formula for the surface area of a sphere is A = 4*pi*r^2.

If the diameter is 12 cm, the radius, r, is 6 cm.

Thus, in this case, the surface area of the sphere is

A = 4*pi*(6 cm)^2 = 144*pi cm^2.

Answer 2

Surface area = 452 square cm.

Explanation:

surface area of a sphere with a diameter 12 cm

Diameter = 12 cm

Radius = diameter divide by 2=
`(12)/(2) =6`

Surface area of a sphere =
`4\pi r^2`

Where 'r' represents the radius of the sphere

`4\cdot \pi \cdot 6 \cdot 6= 452.3893421`

Now round the answer to nearest whole number

Surface area = 452 square cm.