Question

In the adjoining figure ABCD is a rectangle.
Find the area of the shaded region.
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Answer 1

Pythagoras' theorem is a formula you can use to calculate the length of any of the sides on a right-angled triangle or the distance between two points. Pythagoras' theorem states that for all right-angled triangles, 'The square on the hypotenuse is equal to the sum of the squares on the other two sides'.

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Answer 2

Answer:

ans let AE be 10 cm DC 18 cm AD 12cm FC 7cm FB 5cm

area of triangle ADE 60cm

area of triangle EFB 20cm

area of triangle DCF 63cm

total area of shaded region= total area of the rectangle-the sum of these triangles i.e. 216-143

=73.