Question

Two cones with same base radius 8 cm and hieght 15cm are joined together along their bases. Find the surface area of the shap formed

Answer 1

Surface area will be
$2(\pi)rl$
l =
$\sqrt{ {8}^{2} + {15}^{2} } = 17$
hence s.a = 2 × 3.14 × 8 × 17 = 854.08 cm square.........