math

posted by .

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

  • math -

    i need the answer

  • math -

    can you not look up the formulas?

    a = 1/2 r^2 θ, so
    1/2 (36^2) θ = 54 pi (not pie!)
    θ = 108π/1296 = 0.2618

    now for the arc length,

    s = rθ = 36 * 0.2618 = 9.42

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 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. …
  2. trig

    In a circle of radius 12 inches, a sector is formed by a central angle of pie/4 radians. Find the area of the sector to the nearest hundredth of a square inch.
  3. geometry

    FIND THE LENGTH OF THE RADIUS OF THE CIRCLE IS 9cm. THE ARC OF THE SECTOR MEASURES 60 DEGREES. FIND THE AREA OF THE SECTOR.
  4. 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
  5. Geometry

    The measure of the central angle of a sector of a circle is 90degrees. The arc length of the sector is 3(pie) cm. What is the radius of the circle?
  6. maths --plse help me..

    Find the area of the sector of a circle of radius 7cm if the corresponding arc length is 6.2cm
  7. math

    An angle of 1.8 radians at the center of the circle subtends an arc of length 23.4cm. Find: (a) The radius of the circle (b) The area of the sector enclosed by the arc and the radii.
  8. Geometry

    The circumference of a circle is 20 pi cm. Find diameter, radius, and area of the disk, the length of an arc of 90 angle and area of a 90 angle sector. Answer in terms of pi. d= ___ r= _____, disk area= _______ arc length =______, …
  9. math

    ABC is a sector of a circle with radius R cm and centered at C. The arc DE lies on a circle also centered at C.If the arc DE divides the sector ABC into two regions of equal area. Find the length of the interval CD in terms of R.
  10. Math

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

More Similar Questions