area of sector is 90 degree and the radius is 7 cm find the perimeter of sector
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perimeter of sector= length of arc + 2r
=o(theta)/360° × 2πr + 2r
=90°/360° × 2 × 22/7 × 7 + 7
=11 + 14
=25 cm
=o(theta)/360° × 2πr + 2r
=90°/360° × 2 × 22/7 × 7 + 7
=11 + 14
=25 cm
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