Question

from a solid cylinder whose height is 3.5 cm and radius 2.8 CM a hemispherical cavity of the same thing is hello find the total surface area of the remaining solid​

Answer 1

Volume of cube =(side)^3

According to question, =side= 64

(Side)^3 = 4 cm

For the resulting cubiod, length = 4 + 4 = 8 cm, breadth = 4 cm and height = 4 cm

Surface area of resulting cuboid =2(lb+bh+hl)

= 2(8×4+4×4+4×h)

= 2 (32 + 16 + 32)

= 2×80=160 cm^2