measure of an Arc of a sector of a circle is 90 degree and its radius is 7 cm
Find the perimeter of sector
(A). 44 cm
(B) 25cm
(C). 36cm
(D) 56 cm
Answers
Answered by
2
HERE IS YOUR ANSWER :
Perimeter of sector = length of arc + 2r
=theta/360×2πr+2r
=90/360×2×22/7×7+2×7
=11+14
=25cm.
therefore perimeter of sector is 25cm.
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Answered by
0
Answer:
Perimeter of sector = radius + arc length + radius
Radius = 7cm
Segment arc length = (segment angle/360) × 2 × pie × radius
Segment angle = 90
Pie = 22/7
Segment arc length = (90/360) × 2 × (22/7) × 7
Segment arc length= 44/4
Segment arc length= 11 cm
Perimeter of sector = 7 + 11 + 7 = 25cm
Hence, option B is the right answer.
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