Arianna has a tent for her dollhouse. What is the surface area of the tent? 159 mm2 192 mm2 123 mm2 168 mm2
2 answers:
Answer:
The surface area is
Step-by-step explanation:
we know that
The tent is a triangular prism
see the attached figure to better understand the problem
The surface area of the triangular prism is equal to
where
B is the area of the triangular face
P is the perimeter of the triangular face
L is the length of the prism
<em>Find the area of the triangular face B</em>
<em>Find the perimeter of the triangular face P</em>
we have
substitute the values
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Explanation:
When you change sides, if in the left side you are multiplying, when you transfer it to right side you divide. Same thing should be done for addition subtraction.
So /-4 was division and negative number
When we transfered it, it became positive multiplication number