Math, asked by saniapatnaik, 3 months ago

in figure a parallelogram is drawn in a trapezium the area of a parallelogram to 80 cm in the area of trapezium​

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Answered by pritishah75
0

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Answered by khashrul
0

Answer:

Area of the trapezium = 128 cm^2

Step-by-step explanation:

The triangle left when the parallelogram is cut off from the trapezium, must have the base = 22cm - 10cm = 12 cm.  [∵ opposite sides of parallelogram are equal]

The same triangle have other two sides = 10 cm each

Therefore, perimeter of the triangle = (12 + 10 + 10) cm = 32 cm.

Half the perimeter, S = 32/2 cm = 16 cm

Therefore, s(s - a)(s - b)(s - c) = 16(16 - 12)(16 - 10)(16 - 10) = 16x4x6x6 = 48x48

\sqrt{s(s - a)(s - b)(s - c)} = \sqrt{4^2.12^2} cm^2 = 48 cm^2

Area of the trapezium = Area of the parallelogram + Area of the triangle

= 80 cm^2 + 48 cm^2 = 128 cm^2

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