Question

if the height and sum of the parallel sides of a trapezium are increased three times, then find the increase per cent of area .​

Answer 1

Where, a and b are parallel sides and h is perpendicular height.

Where, a and b are parallel sides and h is perpendicular height.So, (a+b) is sum of length of bases of a trapezium.

Where, a and b are parallel sides and h is perpendicular height.So, (a+b) is sum of length of bases of a trapezium.Now,

$\frac{x + y}{2} \times y$

⇒ a+b=300cm

⇒ a+b=300cmWas this answer helpful?

Step-by-step explanation:

MARK AS BRAINLIST