2007-06-08 20:41:22 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
area of sector= (Pi r*r angle of sector) / 360
so, req. area=(3.14x 36x120) /360 cm.cm
=37.68cm.cm
2007-06-08 20:57:09 · answer #1 · answered by isha k 1 · 0⤊ 0⤋
The area of a circle is pi*R^2 A circle has 360 degrees so 120 degrees is 1/3 of a full circle The area of the sector is then (1/3) the area of the circle Area of sector = (1/3)piR^2 = (1/3)pi*36 = 12pi cm^2 Area of sector = 37.7 cm^2
2016-04-01 11:52:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
♥ proportion:
circle area C=pi*r^2; sector area S=120°*r^2= (pi/3)*r^2 =37.7 cm^2;
2007-06-08 21:00:20 · answer #3 · answered by Anonymous · 0⤊ 0⤋
A = (120/360) x π x 6² cm²
A = 12 π cm²
A = 37.7 cm² (to 1 decimal place)
2007-06-08 21:32:17 · answer #4 · answered by Como 7 · 0⤊ 0⤋
area of a sector=teta/360xpixradiusxradius
So teta=120
so 120/360x22/7x36=37.7 cmxcm
2007-06-08 21:15:11 · answer #5 · answered by r s 3 · 0⤊ 0⤋