Question

5. Calculate, in terms of it, the total surface

area of a solid cylinder of radius 3cm and
height 4cm​

Answer 1

131.88 cm²

Explanation:

At = 2×Acircle + Arectangle

= 2×π·r² + w×h

w = 2π·r = 2·3.14·3 = 18.84 cm

At = 2·3.14·9cm² + 18.84cm·4cm

= 56.52cm² + 75.36cm²

= 131.88 cm²