Question

The area of the circular base of a cone is 616 cm^2 and its height is 48 cm find its whole surface area

Answer 1

Answer:

2816 sq.cm

tep-by-step explanation:

Area of the circular base=616 cm^2

πr^2=616

22/7 × r^2=616

r^2=(616×7)/22

r^2=196

r=√196

r=14 cm

Height of the cone=48 cm

Slant height(l)=√r^2+h^2

=√14^2+48^2

=√196+2304

=√2500

l=50 cm

TSA of the cone=πr(r+l)

=22/7 ×14(14+50)

=22×2(64)

=44(64)

=2816 sq.cm