Question

Question 2 (iii)
Find the surface area of a sphere of diameter:

(iii) 3.5 m

$[Assume\pi =\frac{22}{7}]$

Answer 1

(iii) Radius (r) of sphere $=\frac{3.5}{2}=1.75m$

Surface area of sphere $=4\pi r^2$

$=[4\times \frac{22}{7}\times (1.75{)}^2]m^2=38.5m^2$