Answer:
D.347.45cm²
Step-by-step explanation:
The formula to find the surface area of a rectangular prism is:
Let's break down our variables:
Length = 11.73cm
Width = 9.08cm
Height = 3.23cm
Let's substitute the values:
cm²
(the second option)
Hope this helps!
6
We can use ratios to solve
15 ft 18ft
---------- = -----------
5ft x
Using cross products
15x = 5*18
15x = 90
Divide by 15
15x/15 = 90/15
x =6