Ask a New Question
Search
Asked by
hashim
sector of radius 7cm has an area of 34.3cm squared. What is the perimeter of the sector
Answers
Answers
Answered by
oobleck
area of sector is 1/2 r^2 θ, so θ = 2a/r^2 = 68.6/98
arc length s = rθ, so the perimeter is
p = 2r + rθ = 7(2 + 68.6/98) = 18.9 cm
Related Questions
Related
The radius of a sector of a circle is increasing at a rate of 3 cm/sec while the area is decreasing...
A sector of a circle of radius 9 cm subtends angle 120 at center of the circle find the area of the...
A sector of a circle of radius 6cm subtends an angle of 105 of the centre of the circle. Calculate...
A sector of a circle radius 8cm subtends and and angle 90°a at the centre of a circle. If the sector...
A sector with radius 9cm and subtend an angle 210°.find the a:find the base radius of the cone. B: h...
a sector of a circle of radius 8cm has an angle of 120 degrees at the centre find its perimeter and...
A sector of a circle of radius 6cm subtends angle of 105 at the centre of the circle calculate the p...
A sector of a circle of radius 7 cm substending an angle 270 at the centre of the circle is used to...
The sector of a with radius 21cm has an area of 280cm^2 if the perimeter of the sector is 68.7 and...
A sector of a circle of radius 7cm subtending angle 270 degree at the center calculate the area of s...