Question

A race track is in the forn of ring with external radius and internal radius as 14cm and 7cm as shown in the fig.then the area of the race track will be:
a)262 centimeter Square
b)342 centimeter Square
c)442 centimeter Square
d)462 centimeter Square ​

Answer 1

for internal radius of. race track

now area for this race track ( which is in circle shape) = πr²=22/7×7×7

=22×7=154cm²

now for external radius= 22/7×14×14=308

154+308=262cm²

a) 262cm 2

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