Find the area of rectangles with the following pairs of monomials as their lengths and breadths respectively:
(1) $(10m, 5n)$
(2) $(20x^2 , 5y^2)$

AcademicMathematicsNCERTClass 8

Given:

Lengths and breadths of rectangles are as follows:

$(10m, 5n)$

$(20x^2, 5y^2)$

To do:

We have to find the area of rectangles.

Solution:

We know that,

Area of a rectangle of length $l$ and breadth $b$ is $lb$.

Therefore,

Area of the rectangle with $(10m, 5n)$ as its measurements is,

$A=10m \times 5n$

$=50mn$

Area of the rectangle with $(20x^2, 5y^2)$ as its measurements is,

$A=20x^2 \times 5y^2$

$=100x^2y^2$

raja
Updated on 10-Oct-2022 13:20:30

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