Question

A cylindrical vessels open at top was radius is 10 centimetre and height 2 centimetre find the total surface of area of vessels ( π=3.14)

Answer 1

$\pi \: r \: h + \pi {r}^{2} \\ = 3.14 \times 10 \times 2 + 3.14 \times 10 \times 10 \\ = 3.14(20 + 100) \\ = 3.14 \times 120 \\ = 376.8 {cm}^{2}$