Question

रोड रोलर है द डायमीटर 0.7 मीटर एंड इट्स विद इन 2 मीटर फाइंड द लीस्ट नंबर आफ रिवॉल्यूशन एंड रोल नंबर 21 इन ऑर्डर टू लेवल एग्जाम ऑफ़ साइज 1 मीटर इन टू 4 मीटर​

Answer 1

Answer:

A road roller (in the shape of a cylinder) has a diameter 0.7 m and its width is 1.2 m. Find the least number of revolutions that the roller must make in order to level a playground of size 120 m by 44 m.

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ANSWER

Since at has width 1.2m

No. of parallel shifts =

1.2

120

=100

Also let no. of reduction in one shift be n

∴n×πd=44m

∴n×

7

22

×

10

7

=44

∴n=20

∴ least number of reduction =100×20

=2000

Step-by-step explanation:

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