Question

The length of a rectangle is $10cm$ and breadth is $7cm$. What will be the area of a rectangle formed by joining $12$ of these rectangles?

• A. $440m^2$
• B. $840c{m}^2$
• C. $840m^2$
• D. $440c{m}^2$

Answer 1

The correct option is B

$840c{m}^2$

Given,

The length of a rectangle = $10cm$

Breadth = $7cm$

Area of a rectangle = Length $\times$ Breadth = $10\times 7$ = $70c{m}^2$
When we join several figures, the area of the figure formed is the sum of areas of the figures joined.
Hence, area of the larger rectangle = $12\times 70$
= $840c{m}^2$