Question

the Area of a trapezium of height 12cm is 240cm square .if the length of one parallel side is 25cm . find the length of the other parallel side .
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Answer 1

Answer:

b=15cm.

*see attachment*

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Thanks.

Answer 2

Answer:

The length of the other parallel side is 15 cm.

Step-by-step explanation:

Area of a trapezium is $\frac{1}{2} . (a + b) . h$ where, a and b are the lengths of the parallel sides and h is the height.

According to the problem:

$\frac{1}{2} . (25 + b) . 12 = 240$

$=>(25 + b) . 6 = 240$

$=>(25 + b) = 40$

$=> b = 40 - 25 = 15$

Therefore, the length of the other parallel side is 15 cm.