Radius of conical cap (r) = 7 cm
Height of conical cap (h) = 24cm
We have to find the area of the sheet required to make 10 such caps.
Slant height, l2 = r2+h2
= 625 [Taking square root on both the side]
l = 25 cm
Curved surface area of 1 conical cap = πrl
Curved surface area of 10 caps = (10×550) cm2 = 5500 cm2
Therefore, the area of 5500 cm2 of the sheet is required to make 10 such caps.