Question

Find the area of a trapezium whose parallel sides are $21$mm and $17$ mm and a height of $10$ mm.

• A. $190$ $m^2$
• B. $190$ $c{m}^2$
• C. $190$ $m{m}^3$
• D. $190$ $m{m}^2$

Answer 1

Answer: (D)

$190$ $m{m}^2$

Area of a trapezoid = $\frac{1}{2}(b_1+b_2)\times h$
$b_1=$ $21$ mm
$b_2=$ $17$ mm
h = $10$ mm
= $\frac{1}{2}(21+17)\times 10$
= $\frac{1}{2}\times 38\times 10$
= $190$ $m{m}^2$