Question

(27)-x53
late: (1)
(ii) (5-1 x 3-l) 8-1
34​

Answer 1

Answer:

use calculator

Step-by-step explanation:

Answer:

����������������=31687��3Volumeofironused=73168cm3

Step-by-step explanation:

Let assume that r, R and h represents the internal radii, external radii and height of hollow cylinder respectively.

Given that,

Internal radii, r = 3 cm

External radii, R = 5 cm

Height of hollow cylinder, h = 9 cm

Now,

����������������Volumeofironused

=��������ℎ�������������=Volumeofhollowcylinder

=�(�2−�2)ℎ=π(R2−r2)h

=227×(52−32)×9=722×(52−32)×9

=1987×(25−9)=7198×(25−9)

=1987×16=7198×16

=31687��3=73168cm3

Hence,

⟹����������������=31687��3⟹Volumeofironused=73168cm3