PLeAsE HeLp
This figure consists of a rectangle and a quarter circle.
What is the perimeter of this figure?
Use 3.14 for π .
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Answered by
2
Radius of the quarter circle is 11 cm.
Measure of the curved side
= 2πr × 90/360
= 2 × 3.14 × 11 × 1/4
= 17.27 cm
The bottom side measures 2 cm, as it is a rectangle.
The right edge of the rectangle is decreased by the radius of the quarter circle. So that edge measures 20 - 11 = 9 cm.
∴ Perimeter = 20 + 2 + 17.27 + 11 + 9 + 2 = 61.27 cm
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Answered by
1
Perimeter of rectangle = 2(l+b)
=2(20+2)
=2(22)
=44cm
Perimeter of quadrant = 1/4 ×2×3.14×11
=17.27cm
Now,
Total Perimeter = 44+17.27 = 61.27cm
=2(20+2)
=2(22)
=44cm
Perimeter of quadrant = 1/4 ×2×3.14×11
=17.27cm
Now,
Total Perimeter = 44+17.27 = 61.27cm
Is tHiS CoRrEcT?
Mr. Samit, you have to deduct 11 cm because the right edge of the rectangle is deceased by 11 cm there.
Thus we get 61.27 cm as the answer.
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