Question

How do you find the area of the rectangle given the side of it is 3-√10 the bottom is 4√10?

Answer 1

120 square units

Explanation:

The area of a rectangle is A = lb , where l , is the length and b , the breadth.

here `l=4sqrt10" and " b=3sqrt10`

`rArrA=4sqrt10xx3sqrt10=4xx3xxsqrt10xxsqrt10`

Note: in general `sqrtaxxsqrta=a`

`rArrsqrt10xxsqrt10=10`

`rArrA=4xx3xx10=12xx10=120" square units"`