Two parallel sides of a trapezium are 60cm & 77 cm and the other two sides are 25 & 26cm. Find the area of trapezium.
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Step-by-step explanation:
area ABEC
s=
2
25+26+17
=34
area ΔBEC=
34×9×8×17
=17×3×2×2=204cm
2
area ΔBEC=
2
1
×17×h=204
h=
17
204×2
=24
area trap. ABCD =
2
1
(60+77)×24=137×12=1644cm
2
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