What are two ways you can find the surface area of a prism?
2 answers:
The total surface area of a prism is the sum of the area of all of its sides.
The surface area = (2 * area of base) + (perimeter of base * height)
If the base is a rectangle or square you can use this formula:
SA = 2LW + 2(L+W)H = 2LW + 2HL + 2HW = 2(LW + LH + HW)
If the base is a circle, use this formula:
SA = 2πr² + 2πrh
If the base is a triangle, this formula will come in handy:
SA = bh + (
)h
where s₁, s₂, and s₃ are the three sides of the triangle.
The surface area = (2 * area of base) + (perimeter of base * height)
If the base is a rectangle or square you can use this formula:
SA = 2LW + 2(L+W)H = 2LW + 2HL + 2HW = 2(LW + LH + HW)
If the base is a circle, use this formula:
SA = 2πr² + 2πrh
If the base is a triangle, this formula will come in handy:
SA = bh + (
where s₁, s₂, and s₃ are the three sides of the triangle.
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Answer:
see explanation
Step-by-step explanation:
These are the terms of a geometric sequence with n th term
= a
where re a is the first term and r the common ratio
r = 9 ÷ - 3 = - 27 ÷ 9 = 81 ÷ - 27 = - 3 ← common ratio
and a = - 3, thus
[te x]a_{n}[/tex] = - 3 ← explicit formula