Question

Area of a trapezium is 140 cm, if the length of one of its parallel sides is 25 cm
and height is 7cm then find out the length of the second parallel side.
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Answer 1

Answer:

Area of a trapezium is 140 cm, if the length of one of its parallel sides is 25 cm

and height is 7cm then find out the length of the second parallel side.

8.75

Answer 2

Given:-

• Area of Trapezium = 140cm²
• Length of one parallel side = 25cm
• Height between the parallel sides = 7cm

To Find:-

• Length of the second parallel side.

Solution:-

$\boxed{\sf{✯\;Area\;of\; Trapezium = \frac{1}{2}(a+b)h}}$

$→\;{\sf{\frac{1}{2}×(25+b)×7 = 140}}$

$→\;{\sf{25+b = \frac{140×2}{7}}}$

$→\;{\sf{25+b = 20×2}}$

$→\;{\sf{b = 40-25}}$

$☞\;{\red{\bf{b = 15}}}$

• Length of second parallel side = 15cm

$\Large{✓}$

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