Question

There are total surface area of solid hemispheres of radius 7 cm
A)147*22/7
B)145*22/7
C)140*22/7
D)none

Answer 1

TSA of hemisphere = 3*pi*r^2
                                = 3 * 22/7 * 49 
                                = 147 * 22/7                      

(A) 147