Question

The height and base radius of a cone are 16 cm and 12 CM respectively find the curved surface area of the cone

Answer 1

Answer:

Step-by-step explanation:

L=✓h^2+r^2=√16*16+12*12=20

Csa=I'll=22/7*16*20=1004.8cm^2

Answer 2

Answer:

753.98 cm².

Step-by-step explanation:

The formula to determine the curved surface area of a cone is (πrl).

Now to determine the slant height(l) we need the values of radius(r) and height(h) which are given as 12 cm & 16 cm respectively.

(Slant height)² = (height)² + (radius)²

or, l² = h² + r²

or, l² = 16² + 12²

or, l² = 256 + 144

or, l = √(400)

or, l = 20

Thus, the slant height of the given cone is 20 cm.

Therefore the curved surface area =  (π X 12 X 20) cm² = 753.98 cm²