The parallel sides of a trapezium are 60cm and 77cm and other sides are 25cm and 26cm. Its area is
1644cm2
1444cm2
1244cm2
1000cm2
A
1644cm2
B
1244cm2
C
1000cm2
D
1444cm2
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Solution
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h2=252−x2=262−(17−x)2
17(17−2x)=51
17−2x=3
2x=14
x=7
∴h=24
Area =12(a+b)h=12×(60+77)
=137×12
=1644cm2
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