Q72 of 125 Page 38

What is the cost of 27.5 m of cloth at 53.50 per metre?

Rate of cloth = Rs. 53.50 per m

Cost of 27.5 m cloth = Rate × 27.5


⇒ 53.50 × 27.5 = 1471.25


∴ Required cost of cloth is Rs. 1471.25


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To find the distance around a circular disc, multiply the diameter of the disc by 3.14. What is the distance around the disc when :

a) the diameter is 18.7 cm?


b) the radius is 6.45 cm?

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In a hurdle race, Nidhi is over hurdle B andof the way through the race, as shown in Fig. 2.7.


Then, answer the following:


a) Where will Nidhi be, when she isof the way through the race?


b) Where will Nidhi be when she isof the way through the race?


c) Give two fractions to tell what part of the race Nidhi has finished when she is over hurdle C.

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Diameter of Earth is 12756000m. In 1996, a new planet was discovered whose diameter isof the diameter of Earth. Find the diameter of this planet in km.