Answer:
2A/r + 2r
Step-by-step explanation:
A sector is made of an arc and two radii. As such, the perimeter of the sector is the sum of the length of an arc and the two radii. Given that the radius is r and the area is A, the area of a sector A
= Ф°/360° * πr²
The length L of an arc of the sector
= Ф°/360° * 2πr
Hence,
A/L = r/2
L = 2A/r
The perimeter of the sector
= L + 2r
= 2A/r + 2r
should be 15...
Given the equation;
To solve, let us multiply through by the least common multiple of the the denominator of the three fractions wich is 24;