Question

please give me the answer for this question please​

Answer 1

Step-by-step explanation:

i) Central angle = 120°

diameter = 2.6 cm

radius = 1.3 cm

area = 120/360 x 3.14 x 1.3 x 1.3

=5.3 / 3

= 1.766 cm²

length of arc = (2 x 3.14 x 1.3 x 120)/360

=2.72 cm

perimeter = 2 x 1.3 + 2.72 = 5.32 cm

ii)central angle = 72°

diameter = 10 cm

radius = 5 cm

area = (3.14 x 5 x 5 x 72)/360 = 15.7 cm²

arc = (72 x 2 x 3.14 x 5)/360 = 6.28 cm

perimeter = 2 x 5 + 6.28 = 16.28 cm