Question

an electricity pole has a height of 6m and a radius of 0.21m. what is the total surface area of the pole?also ,find the cost of painting the pole if painting an area of 1sq.m costs Rs 50 ​

Answer 1

$surface \: \: area = \pi \: r {}^{2} h$

$\frac{22}{7} \times 0.21 \times 0.21 \times 6$

$0.83m {}^{2}$

Cost of painting-

$0.83 \times 50$

$41.56 \: rs.$