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A rectangle with one side of length 4 cm...

A rectangle with one side of length 4 cm. is inscribed in a circle of diameter 5 cm. Find, the area of the rectangle.

A

21`cm^2` / सेमी`""^2`

B

` 12cm^2` / सेमी`""^2`

C

`4cm^2` / सेमी`""^2`

D

`3cm^2` / सेमी`""^2`

Text Solution

Verified by Experts

The correct Answer is:
A

AC (व्यास) = 5 cm
BC = 4cm
` therefore AB=sqrt(5^2 -4^2)`
` therefore `आयत ABCD का क्षेत्रफल `= 4 xx 3 = 12cm^2`
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