Question

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

Answer:

Step-by-step explanation:

area of the shaded region=ar of rectangle

so,ar(triangle1+triangle2+triangle3)

all the tree triangles are right angle triangle

if ar+1/2*all the right angle sides

ar+1/2*12*10+1/2*18*7+1/2*8*5

=143 sq cm

area of rectangle=18*12

                          =216cm

area=216-143

      =73cm^2