Question

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

• A. 840 $c{m}^2$
• B. 70 $cm$
• C. 680 $c{m}^2$
• D. 460 $cm$

Answer 1

The correct option is A

840 $c{m}^2$

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
$=12\times 70$
$=840c{m}^2$