Question

if lengths of the parallel sides of a trapezium are 8 1/2cm,6cm and height is 5cm ,find the area of trapezium​.​

Answer 1

given ;

parallel side = 81/2 and 6 cm

height = 6 cm

to find ;

area of trapezium

solution;

$area \: of \: trapezium = \frac{1}{2} (sum \: of \: parallel \: side \: )(height) \\ \\ area \: = \frac{1}{2} \times ( \frac{81}{2} + 6)(5)$

$area = \frac{1}{2} \times \frac{81 + 32}{2} \times 5 \\ \\ area = \frac{1}{2} \times \frac{113}{2} \times 5 \\ \\ = 56.5 \times 2.5 \\ \\ area \: of \: trapezium = 141.20$