Question

Answer the attachment ​

Answer 1

Answer:

2:3 will be the answer.....

Step-by-step explanation:

see attachment......for full ANSWER......

Answer 2

Answer:

ATQ: h=d [CYLINDER]

i.e., h=2r

To Find: CSA/TSA

CSA of cylinder =2πrh

=π×2×r×2r

=(4πr²) sq. units

TSA of cylinder=2πrh+2πr²

=4πr²+2πr²

=(6πr²) sq. units

So, Ratio= CSA/TSA

=$\frac{4\pi \: r {}^{2} }{6\pi \: r {}^{2} }$

=$\frac{2}{3}$

Therefore, the ratio of the Curved Surface area to the Total surface area is

2:3