Math

A sector of a circle has a radius 5cm
The area of the sector is 5π
Work out the arc length

asked by Avza
  1. s = rθ

    so, what's θ?

    1/2 r^2 θ = 5π

    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Mathmatics

    A sector of a circle of radius 9 cm subtends angle 120 at center of the circle find the area of the sector to the nearest cm
  2. How do i do this maths question??

    A sector of a circle with radius r cm contains an angle of θ radians between the bounding radii. Given that the perimeter of the sector is 7cm, express θ in terms of r and show that the area is r/2(7-2r)cm square. Hence,
  3. math

    A sector of a circle subtending an angle 300 degrees at the centre is used to form a cone with base radius 6cm. Find the (a.)radius of the circle (b.)volume of the cone (c.)area of the minor sector of the circle
  4. Calculus1

    The radius of a sector of a circle is increasing at a rate of 3 cm/sec while the area is decreasing at a rate of 1 cm2/sec. At what rate is the angle of the sector changing when the area is 20 cm2 and the radius os 5cm?
  5. trigonometry

    A sector AOB of a circle, centre O, radius r cm, where the acute angle AOB is theta radians. Given that the perimeter of the sector is 14 cm and that the area of the sector is 10 cm^2, evaluate r and theta.
  6. math

    area of a sector of a circle of radius 36 cm is 54 pie cm square . find the length of the corresponding arc of the sector
  7. maths geomentry help!!!

    the area of a sector PQR is a @rad.and the radius of the of the circle is rcm,the area of the sector is 20cm^2 and the perimeter is 26cm.find r?
  8. math

    A sector in a circle of radius 8.1 m has an area of 53.5 m^2. The central angle in a sector must be _____o. Round to one decimal place.
  9. TRIG HELP ASAP

    I really need help on this problem. A sector has area of 15 in^2 and central angle of 0.2 radians. Find the radius of the circle and arc length of the sector
  10. trigonometry

    please check my answers. 1.Find the area of the sector of a circle. r=11.8cm, theta-pi/7 radians I got 31.2cmsquared 2.Find the radius of a circle in which a central angle of pi/6radian determines a sector of area 76square meters.

More Similar Questions