Question

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Answer 1

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Answer 2

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Solution 9-

Let length of parallel side=2x and x

Area of Trapezium =

$\frac{1}{2} \times (a + b) \times h$

$\frac{1}{2} \times 20(2x + x) = 720 \\ \\ 30x = 720 \\ x = 24$

Hence the length of the parallel sides =24cm and 48cm.

Solution 10-

x²+h² = 56²

(25-x)²+h² = 39²

x²-56² = (25-x)² - 39²

x = 224/5

So,

h² = 56²-x² = 28224/25

h = 168/5

Thus,

The area is (40+65)/2 × 168/5 = 1764

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