Sector
π or “pi” is an irrational number, and
Arc
3.1416.
Make sure you know how to call up the π in your calculator to
retain the best accuracy in your calculations.
A sector has area 25 cm2 and radius 6 cm. Find the angle
subtended at the centre.
(1 d.p.)
E:p100, Ex4
A =
100 cm
= 10,000 cm2
,
coasters
100 cm
1 m2
Arcs and Sectors
Find the area of shape b, and the area and perimeter of shape c.
Give your answer to 3 significant figures.
b.
c.
0580_w16_qp_41
0580_s16_qp_21