Question

the diameter of a garden roller is 1.8 m and its length is 2.1 m . how much area will it take to cover 100 revolutions

Answer 1

Hello !!!

Given :-

The diameter of the roller is 1.8 m

The length of the same roller is 2.1 m

so, The radius of the garden roller is 1.8/2 ,i.e., 0.9 m

According to the problem,

The curved surface area of the roller which is in cylindrical form = 2πrh

Now,

The area covered by the garden roller in within 1 complete revolution =

$= 2 \times \frac{22}{7} \times 0.9 \times 2.1 \\ = 44 \times 0.9 \times 0.3 \\ = 44 \times 0.27 \\ = 11.88$

Hence, the Area covered by the garden roller in 1 revolution is 11.88 m².

hence, The Area covered by the 100 complete revolution is

$11.88 \times 100 \\ = 1188 \: {m}^{2}$

❤️⛈️⚡Thank you ⚡⛈️❤️