Question

13. Area of a trapezium is 128 sq. cm and the distance between its parallel sides
is 8 cm. Length of one parallel side is 28 cm. Find the length of the other parallel
side.​

Answer 1

Answer:

Since, length of the parallel sides are 14cm and 18cm and height (h)=9cm

By using the formula

Area of trapezium =1/2×(sum of parallel sides)×height

=1/2×(14+18)×9

=144cm

2

Answer 2

Answer:

Let The Length Of Other Parallel Line Be xcm

Area Of Trap. = (Sum Of Parallel Sides) Height/2

Applying The Given Values

We Got

128 = (28+x)8/2

128×2/8 = 28+x

32 = 28+x

x = 4 cm