19. Calculate the length of the boundary and the area of the shaded repon in the
following diagrams. All measurements are in centimetres
W Unshaded part is a semicircle
GD) Pour miordes on a square
7
meter and the area
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Answer:
Third line will be
=(28)
2
+4×
2
1
×7
2
=784+308
=1092 cm
2
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