29. Find the area of the shaded portion:
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the following shape is a rectangle
the area of rectangle is b×h that is length ×breadth
L=18 cm and b=10 cm
now to find the area of shaded portion
total area -unshaded area
18×10=180sqcm
triangle EAF is a right angled triangle
therefore area of right angled triangle is 1/2× b×h
1/2×10×6=30sqcm
triangle CBE is also a right angled triangle
therefore formula will be the same
that is 1/2×b×h
1/2×10×8=40sq cm
area of whole rectangle-30+40
180-70=110sqcm
therefore area of shaded portion is 110 sqcm
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