Question

the radius of a circle is 3.5 cm and the length of arc is 10cm find the area of the corresponding sector ​

Answer 1

Answer:

here,

r = 3.5 cm

l = 10cm

Area of sector = ½ l × r

= ½ × 10 × 3.5

= 5 × 3.5

= 17. 5 cm²

Answer 2

Explanation:

radius of circle = πr2

22/7* 3.5 * 3.5. = 22*35*35/ 700

38.5cm2

area of sector = length of arc * radius / 2

10* 3.5 /2 = 35/2 = 17.5cm2

area of corresponding sector = area of circle - area of given sector.

= 38.5 - 17.5 = 21.0 cm2