Question

Curved surface area of hemisphere with radius 7 cm is
a)308 sq cm
b)308 cm
c)154 sq cm
d)154 cm

Answer 1

Answer:

Let the radius of the base of the cone be r cm

Now circumference of base =154cm

2πr=154

r=

2×22

154×7

=

2

49

cm

Slant height =7cm

Curved area of cone =πrl

=

7

22

×

2

49

×7

=539 cm

2