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the gauge pressure in both tyres of a bicycle is 690 k Pa. If the bicycle and the rider have a combined mass of 90 kg. what is the area of contact of each tyre with the ground? (assume that each tyre supports half the total weight of the bicycle.)

A

`6.39xx10^(-4)m^(2)`

B

`7.39xx10^(-4)m^(2)`

C

`8.39xx10^(-4)m^(2)`

D

`9.39xx10^(-4)m^(2)`

Text Solution

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The correct Answer is:
A
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