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

Answer:

Rs 462

Step-by-step explanation:

Assume the pole, 6m long, to be a perfect cylinder closed on both ends and to be painted on all faces.

1. Determine the area of the top surfaces surface of the pole.

2. Multiply area above by 2 to find sum of areas for the top and bottom surfaces of the pole.

3. Calculate circumference of the pole's cross section and multiply by the length to get the surface area of the shaft portion.

4. Sum the areas from (2) and (3) above to obtain the total surface area of the pole to be painted

5. To determine the cost of painting said pole, multiply the area in (4) above by the provided unit rate of Rs 50