Question

Let the rectangle be obtained by joining $3$ square grids. Then find the total area of the rectangle.

• A. $1c{m}^2$
• B. $2c{m}^2$
• C. $3c{m}^2$
• D. $4c{m}^2$

Answer 1

The correct option is C $3c{m}^2$

Let side of square be ${}^{\prime }{a}_1^{\prime }$ then

Length of rectangle$=3a$

Breadth $a$

Area of rectangle$=3a\times a=3a^2$ units

Put $a=1$, then area$=3\times 1^2=3$ units