Answer:
x = 45
Step-by-step explanation:
Corresponding sides of similar triangles will be in same ratio.

Cross multiply
x*28 = 20*(x+18) {Use distributive method}
28x = 20x + 360
28x - 20x = 360
8x = 360
x = 360/8
x = 45

To get the 0.12 to repeat, the trick is to subtract 1 from the denominator

Then reduce the fraction.

now add the 3 to get
you showed no diagram or any picture / screenshot
Answer: V=πr^2h=π·4^2·8≈402.12386cm^2
It’s D, I graphed on a calculator and the line was straight