Question

The diameter of the base of a cone is 10.5 cm, and its slant height is 10 cm. The curved surface area is:​

Answer 1

Answer:

the diameter of base is 10.5

so radius = 10.5/2=5.25

and then slant height is 10cm

we know that c.s.a of cone is πrl

then 22/7*5.25*10=165 sq.cm

Answer 2

Answer:

165

Step-by-step explanation:

diameter of the base of a cone =10.5

radius of the base cone = diameter/2

r = 10.5/2

r= 5.25

therefore ,slant height is 10 cm.

curved surface area of cone = πrl

= 22/7 × 5.25 ×10

= 22/7×52.5

=22× 7.5

= 165

I hope it will help you