Question

Calculate the area enclosed by a rectangular shape whose breadth is 20 cm and the length is twice its breadth.

• A. $300c{m}^2$
• B. $800c{m}^2$
• C. $200c{m}^2$
• D. $600c{m}^2$

Answer 1

The correct option is B

$800c{m}^2$

Given:
Breadth of rectangle = 20 cm
Length of rectangle = 2 $\times$ breadth
Therefore, breadth = $2\times$ 20 cm = 40 cm
Now, we know the length and breadth of the rectangle.
Therefore, its area can by calculated as:
Area of rectangle = length $\times$ breadth = $40cm\times 20cm=800c{m}^2$