If the diameter of the base of a cone is 10 cm and its height is 12 cm, then c.s.a is
Answers
Answer:
I know
Step-by-step explanation:
Given diameter of the base of the cone is 10 cm
∴ radius =5 cm. (∵ radius=2diameter).
Also, the slant height of the cone =17 cm.
∴ The curved surface area of the cone is ′πrl′.
r: radius of the base.
l: slant height.
S=πrl=π×5×17=85π cm2.
∴ curved surface area of the cone is 85π cm2
Answer:
2.42 cm^2.
Given:
diameter= 10cm
then, its radius= ( 10/2) cm =5cm
height= 12 cm
we know , l = √ h^2 + r^2
= √(12) ^2 +(5) ^2
= √ 144 + 25
= √169
=13
thus, l = 13 cm
we know that C. S. A of a cone =(πrl) sq units
= ( 22/7 x 5 x 13) cm^2
=1430/7 cm^2
= 2.42 cm^2
Step-by-step explanation:
hope it helps☺☺