Question

find the 1).LSA and 2.) TSA of cylinder with height 16cm and base diameter 7cm​

Answer 1

Height = 16 cm

Radius = 3.5cm

$l.s.a \: = 2\pi \times r \times h \\ 2 \times 22 \div 7 \times 3.5 \times 16 \\ 352 \: cm ^{2} \\ ii)t.s.a \: \: = 2\pi \times r(h + r) \\ 2 \times 22 \div 7 \times 3.5 \times (16 + 3.5) \\ 429cm^{2}$

hope this answer will be helpful ^_^

Answer 2

Step-by-step explanation:

CSA or LSA of a cylindrical = 2πrh

r = 7/2 cm

h = 16cm

CSA = 2πrh

= 2 * 22/7 * 7/2 * 16

= 2 * 11 * 16

= 22 * 16

= 325cm²

TSA of a cylindrical = 2πr(r+h)

= 2 * 22/7 * 7/2 ( 7/2 + 16)

= 22 (7*8)

= 22 * 56

= 1232cm²