Find the sum and express it in simplest form. (-7c3 + 5c2 + 1) + (5c³ - 9c2)
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Answer:
30.9 cm²
Step-by-step explanation:
To find the surface area of this figure, we find the area of the base and the 3 identical sides.
The base is split into two identical right triangles. Let's find the area of one and multiply by two.
Half of 3: 1.5
There are two right triangles:
The area of one of the sides will be the same thing, except the height is 6.
There are 3 sides identical to this one:
.
Add 27 and 3.9:
Hope this helped!