The figure is made up of two shapes, a semicircle and a rectangle.What is the exact perimeter of the figure?
2 answers:
Perimeter of circular area = πr = 3.14 * 10 = 31.4 mm
Perimeter of rectangular area = 30 + 20 + 30 = 80 mm
Total Perimeter = 80 + 31.4 = 111.4
In short, Your Answer would be 111.4 mm
Hope this helps!
Perimeter of a rectangle =2(w+l)=2(50)=100mm
perimeter of a semicircle =circumference of a semicircle=2π2/2=2π*10/2
here d=20 so r=d/2=10mm
perimeter of a semicircle=10πmm=31.4 mm
perimeter of a whole fig is 31.4+100=131.4mm
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