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hichkok12 [17]
3 years ago
8

What is the surface area of this square pyramid?

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
6 0

Answer:

A;3600 yd2

Step-by-step explanation:

The surface area is found by adding the area of the sides

The area of the bottom is

A= s^2 where s is the side length since it is a square

A = s^2 = 30^2= 900

We can find the area of one of the sides and multiply by 4 since all the sides are the same

The sides are triangles so

A = 1/2 bh  where b is the base b=30 and h is the height = 45

A = 1/2 (30)* 45

A = 675

We have 4 of these triangles

4*675 =2700

Add the 4 triangles and the bottom

2700+900

3600

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1)   68

    / \

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  /\

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3) 78

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4) 225

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Second Part:

1)  45

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  3  15

       /\

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45=3*3*5

2)  70

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   2   35

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3)  54

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A
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Answer:

x=67

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Step-by-step explanation:

88% sure

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