2. The radius of the circle is 21 cm. Find
a circumferences of the circle
b area of the circle (Pi= 22127)
if you answer me i will follow you
Answers
Answered by
0
Answer:
Radius of a circle, r = 21 cm
Perimeter of a quadrant, P=(
2
π
+2)r units
=(
7×2
22
+2)×21=(
14
22
+2)×21
P=(
14
22+28
)×21=
14
50
×21
=75cm.
Area of a quadrant, A=
4
πr
2
sq. units
A=
7 /
22
×
4
21×21
=346.5cm
Answered by
8
Step-by-step explanation:
circumference=2πr
=2×22/7×21
=132
area=πr^2
=22/7×21×21
=1386
Similar questions