Question

find the area of the trapezium whose parallel sides are 15cm and 23cm whereas the non parallel sides are 10cm and 8cm
plz do it step wise
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Answer 1

Answer:

$semi \: perimeter \:(s) = \frac{a + b + c + d}{2} \\ = \frac{15 + 23 + 10 + 8}{2} \\ = 28 \\ area \: \\ = \sqrt{(s - a)(s - b)(s - c)(s - d)} \\ \sqrt{(28 - 15)(28 - 23)(28 - 10)(28 - 8)} \\ \sqrt{13 \times 5 \times 18 \times 20} \\ = 152.97 \: (approx)$