The given expression is 3.14(rs + r2) r=3 s=5 i got 3.14(35 + 32)
please tell me if im right or wrong and how to solve thanks

Step-by-step explanation:

R=3 S=5 then it's 3x5 which is 15

3x2=6

Next do 15+6=21

Then do 21x3.14=65.94

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!

step-by-step explanation:

hihi so drawing these 2 triangles is fairly simple. all that's left is finding the height of each one. luckily, we have a side length and an angle, so there is a trig function we can use to solve for the height. the easiest one to use would be tangent, since we have 2/3 things needed to find and the third needed is what we are solving for. tan(73°) * 30 ~= 98.13 and tan(73°) * 35 ~= 114.45