Question

A solid cylinder of height 10 cm and radius 4 cm is
to be plated with material costing £11 per cm?
Find the cost of the plating.​

Answer 1

Answer:

$3870

Step-by-step explanation:

Total Surface area of cylinder = 2 x pi x r x h +2( pi x r^2)

TSA = 2 × 3.14 × 4 × 10 + 2( 3.14 ×16)

TSA = 251.2 + 100.48

= 351.68

Cost = 351.68 × 11

= $ 3870