Will give brainlist as soon as i can (as soon as i get 2 answers i can do it easily) for some reason i thought that this was 141.6

84.96 cm²

Step-by-step explanation:

Since the cylinders are similar then

ratio of heights = 3 : 5 , hence

ratio of areas = 3² : 5² = 9 : 25

let x be the surface area of the smaller cylinder, then by proportion

= ( cross- multiply )

25x = 2124 ( divide both sides by 25 )

x = 84.96

That is the surface area of the smaller cylinder is 84.96 cm²

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.