find the area of each of the following polygons
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area of triangle =b×h/2
=60×11/2
=30×11
=330cm2
hypotenuse=perpendicular+base
h=√(60)(60)+(11)(11)=√3721
h= 61
area of trapezium= h(a+b)/2
=18( 28+61)
= 1602cm 2
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