6: Abby is making a decoration. When folded, the decoration is a triangular pyramid made of four congruent equilateral triangles
. Approximately, what is the surface area of Abby's decoration? 
1 answer:
Answer:
85 square inches
Step-by-step explanation:
I think your question missed key information, allow me to add in and hope it will fit the orginal one. Please have a look at the attached photo
My answer:
From the question, four congruent equilateral triangles with the following information:
- The height: 6.06 inches
- The base : 7 inches
=> The area of the quilateral triangle is:
=1/2*the base*the height
= 1/2*60.6*7
= 21.21 square inches
=> the surface area of Abby's decoration is:
= 4 * The area of the quilateral triangle
= 4*21.21
= 84.84 square inches
≈ 85 square inches
Hope it will find you well.
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