3 years ago

Guys i need an answer and explain

Mathematics

1 answer:

Stella [2.4K]3 years ago

8 0

Step-by-step explanation:

2 x 2= 4, no. of 2s= 2

2 x 2 x 2= 8, no. of 2s= 3

2 x 2 x 2 x 2= 16, no. of 2s= 4

2 x 2 x 2 x 2 x 2= 32, no. of 2s= 5

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For a project, Gabrielle made a model of an Egyptian pyramid. The square base has a side length measuring 10 inches. The pyramid

Varvara68 [4.7K]

The pyramid is shown in the diagram below.
The pyramid is built from four congruent triangles and one square as the base

We have the side of the square, so the area is = 10×10 = 100

We need the height of the triangle to work out its area. We can find out by using the height of the pyramid and half of the length of the side of the square.

Using the Pythagoras rule
Height of triangle = $\sqrt{12^{2}+ 5^{2} } =13$

Area of one triangle = 1/2×10×12=60
Surface area of the pyramid = 100 + (4×60) = 340 square inches