Question

only no 7 it is urgent please help ​

Answer 1

Answer:

Step-by-step explanation:

r = 5

csa =  $2\pi r h$

= 2 x 3.14 x 5 x h = 251.2

=> 31.4 x h = 251.2

=> h = 251.2 / 31.4

=> h = 4

height = 4 cm