To calculate the area of , we need to know two of the basic area formulae.

$Area\,of\,a\,rectangle = length \times breadth$

$Area\,of\,a\,triangle = \frac{1}{2} \times base \times height$

Question

Calculate the area of the rectangle shown below.

$A = l \times b$

$= 7 \times 5$

$= 35c{m^2}$

Question

Calculate the area of the triangle shown below.

$A = \frac{1}{2}bh$

$= \frac{1}{2} \times 8 \times 6$

$= \frac{1}{2} \times 48$

$= 24c{m^2}$