Question

A road roller makes 1400 revolutions. If the radius of the roller is 2.5 m,the distance covered is​

Answer 1

Answer:

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The distance covered is 22,000m

Step-by-step explanation:

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A road roller makes 1400 revolutions. If the radius of the roller is 2.5 m, the distance covered is?

Given:

• ✍️ No. of revolutions= 1400
• ✍️ Radius=2.5 m

To find:

✍️ Distance covered

Solution:

✍️ Let 'r' be the radius of the roller.

Then, ✍️ Circumference= $2{\pi}r$

$✍ Circumference = 2 \times \displaystyle\frac{22}{7} \times 2.5$

$\displaystyle\frac{110}{7}$

15.714

✍️ Distance covered= Circumference$\times$No.of revolutions......

✍️ Distance covered= 15.714$\times$1400

✍️Distance covered= 21,999.6m, which is approximately equal to 22,000m

✍️Hence, the answer for your question is 22,000m

Answer 2

Given:

✍️ No. of revolutions= 1400

✍️ Radius=2.5 m

To find:

✍️ Distance covered

Solution:

✍️ Let 'r' be the radius of the roller.

Then, ✍️ Circumference= 2{\pi}r2πr

✍ Circumference = 2 \times \displaystyle\frac{22}{7} \times 2.5✍Circumference=2×

7

22

×2.5

\displaystyle\frac{110}{7}

7

110

15.714

✍️ Distance covered= Circumference\times× No.of revolutions......

✍️ Distance covered= 15.714\times× 1400

✍️Distance covered= 21,999.6m, which is approximately equal to 22,000m

✍️Hence, the answer for your question is 22,000m