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oee [108]
2 years ago
6

Please help, nobody is helping I need to find surface area

Mathematics
1 answer:
Reil [10]2 years ago
3 0

Answer:

A) 147.6 sq m

Step-by-step explanation:

Separate the pyramided out into 4 triangles and add those

3 of them (sides) will be the same

A=h\frac{b}{2} \\A=10\frac{4}{2} \\A=20

This is one half of the side, multiply by 2 to get the area of the entire side, 40 square m.

The area of all 3 sides together is 40*3 = 120 sq m

For your base, your height will be 6.9 and your base is 4

A = 13.8  sq m

multiply by 2 again for the entire base

A=27.6 sq m

Now add both

120 + 27.6

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3 0
3 years ago
Add.
Dovator [93]

Answer:

6x²+4x

Step-by-step explanation:

The given expressions are 3x²- 4x-4 and 3x²+8x+4.

We need to add these two expressions.

3x²- 4x-4 + 3x²+8x+4 = 3x² + 3x² -4x+8x-4+4

= 6x²+4x

On adding the given expressions, we get the value as 6x²+4x. Hence, the sum of the given expressions is equal to 6x²+4x

4 0
3 years ago
Please help me w/ iready
kirill [66]

Answer:

45 = 45

or

just 45.

Step-by-step explanation:

a = 6 , b = 2

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8 0
2 years ago
A pair of shoes that normally costs $75 is on sale for $55. What is the percent decrease in the price, to the
tia_tia [17]

Answer:

BI=27%

Step-by-step explanation:

x(the precentage of 55 from 75)

75x=55

x=55/75

x=0.73

55 is 0.73 of 75

0.73*100=73%

100%-73%=27%

6 0
2 years ago
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Mattie's perspective on her grandfather's strong-headed opinions gives readers an understanding of the influence he has on her. Mattie's perspective on the events of 1793 gives readers an understanding of the experiences and uneasiness of the time

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