Question

Here is a square-based pyramid with a net as shown. Using this information, calculate the surface area of the pyramid.

Answer 1

Well

It's easy

First find area of square that is 3²=9 cm²

Then

Area of a triangle:1/2*3*5=1/2*15=7.5 cm²

Area of 4 triangles=7.5*4=30 cm²

Surface area of full figure=9+30=39cm²

So the answer is 39cm²

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Answer 2

Answer:

answer

C

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