When making a book cover, Anwar adds an additional 20 sqaure inches to the surface area to allow for overlap. How many square in
2 answers:
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Answer:
15.6
Step-by-step explanation:
We can take this equilateral triangle and split it in half to form a 30-60-90 triangle. This will have base of 3, and height of 3. The area of this is
1/2 ( 3 )( 3 ), but the 1/2 cancels since we have 2 halves of the triangle, and so the area is 9.
is approx. 1.732, so multiplying this by 9, our answer is 15.6