Q. 134.8( 6 Votes )
ABCDE is a pentag
Answer :
Given: ABCDE is a pentagon of which side BC is parallel to diagonal AD, EP is perpendicular on BC and EP intersects AD at the point Q. BC = 7 cm, AD = 13 cm, PE = 9 cm
Also,
and PQ + EQ = PE
⇒ 4 + EQ = 9
⇒ EQ = 5 cm
Now,
Area of pentagon ABCDE = area(ΔAED) + area(trapezium ABCD)
Now, we know
Area of trapezium sum of parallel sides × Height
⇒ area(trapezium ABCD)
Also,
Area of triangle
⇒ area(ABCDE) = 40 + 32.5 = 72.5 cm2
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