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A cyclist rides 40 km to the East, turns...

A cyclist rides 40 km to the East, turns North and rides 20 km, again turns left and rides 20 km. and again turns left and rides 20 km How far is he from his starting point?

A

0 km

B

10 kms

C

20 kms

D

30 kms

Text Solution

Verified by Experts

The correct Answer is:
D

Required distance = AD
`= sqrt((AE)^(2) + (DE)^(2))`
`= sqrt((20)^(2) + (20)^(2))`
` = sqrt(400 + 400)`
` = sqrt(8009) = 28.28 `km
= 30 km
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KIRAN PUBLICATION-DIRECTION & DISTANCE TEST -TYPE - II
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