Question

130 The perimeter of the sector is 1m. Find the length of y, the radius of the circle.
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Answer 1

Answer: 16.63 cm

Explanation:

The length of the arc =
`(360-130)/(360)` * 2
`\pi`y =
`(23)/(18)`
`\pi`y

The perimeter =
`(23)/(18)`
`\pi`y + y + y = y(
`(23)/(18)`
`\pi` + 1 + 1) = 6.01y = 1 m

y = 16.63 cm