Math, asked by premsingh14, 1 year ago

a roller covers 11 km in covering the distance it makes 5000 revolutions find the radius of the roller

Answers

Answered by navaneetsaikadali

Answer:

28.57 m

Step-by-step explanation:

Answered by harjotsinghbhinder13

Solution=>

Let the radius of the road roller be r cm.

Distance covered by road roller in 1 revolution = 2πr

∴ Distance covered by rood roller in 5000 revolution = 5000 × 2πr

Given, Distance covered by road roller in 5000 revolution = 11 km

5000×2×22/7×r=11km=1000m

==>r=1000×7/5000×44

==>r=0.35m

now, multiply by 100 to convert it into cm

Therefore, r=35

Thus, the radius of road roller is 35 cm.

harjotsinghbhinder13: i have only clear doubt that 1km=1000m. so, 11km=11000

harjotsinghbhinder13: thanks

navaneetsaikadali: the answer will be 28.57 m

harjotsinghbhinder13: no wrong

navaneetsaikadali: when we convert it into 11000m

navaneetsaikadali: it is resulting same

harjotsinghbhinder13: because i have found that much to give answer

navaneetsaikadali: i mean when u substitute 1000 with 11000

harjotsinghbhinder13: are bahi maine short main likh diya hai

navaneetsaikadali: ok

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