Question

The cone of siant height I and baser
radius r ús standing on a hemisphere of
radius & carite the formula to find the surface area of the toy​

Answer 1

Here, r = 3.5 cm

∴ h = (15.5 – 3.5) cm = 12.0 cm

Surface area of the conical part

= πrl

Surface area of the hemispherical part

= 2πr2

∴ Total surface area of the toy

= πrl + 2πr2 = πr (l + 2r) cm2

∵ l2 = (12)2 + (3.5)2