Question

please solve this question question no. 4

Answer 1

Answer:

the answer is 130sq cm is covered

Answer 2

Answer:

821.92 cm²

Step-by-step explanation:

A/q,

4*2πrh=6(πr²+πr²)

⇒8πrh=6*2πr²

⇒8*22/7*14*r=12*22/7*r²

⇒14*8=12r

⇒112/12=r

⇒r=28/3

⇒r=9.34 cm

Now, CSA of the cylinder=2πrh

CSA=2*22/7*r*h

       =2*22/7*14*9.34

       =88*9.34

       =821.92 cm²