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

##### 1 Answer

Jun 7, 2016

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"#