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CBSE Class 9 Answered

A 5 cm brick is placed in front of a wheel. What is the radius of the wheel if the distance from the brick to the wheel is 15 cm?
Asked by vkclu.007 | 22 Sep, 2020, 11:15: PM
answered-by-expert Expert Answer
Let r be te radius of of the wheel
Using Pythagoras theorem,
R2 = (R-5)2 + 152
R2 = R2 - 10R + 25 + 225
10R = 250
R=25
Answered by Renu Varma | 23 Sep, 2020, 12:23: PM

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