Question

A cone with slant height 13cm and height 12 cm has hemispherical base. Find its total surface area 3.14 pie

Answer 1

the slant height of the cone is 13 cm and the height is 12 cm

so the radious will be
√13^2 - √12^2
= √169 - √144
= √25 cm
= 5 cm

so its surface area will be
= π×5×13 cm^2
= 3.14 × 5 × 13 cm^2
= 204.1 cm^2 【Answer】