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bixtya [17]
3 years ago
11

Need help ASAP please

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0
The answer is C. Because the side triangles inner corner is 51 so the inner corner of the big train fled are 129. 129 + 20 equals 149 and 180 - 149 equals 31.
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Me need more help plz also add explanation real explanation
Reika [66]

So we want to find the surface area of this pyramid. Finding the surface area of a 3D shape is essentially finding the area of all its sides and adding them together.

What we're going to have to do here is find the area of the base of the pyramid, which is basically a square, and find the area of all four sides of the pyramid, which are triangles.

Formula for area of a square: length × width

Formula for area of a triangle: (base × height) ÷ 2

First we will find the area of the base:

l × w = A

(Write out formula)

8 × 8 =

(Input values)

A = 64 m^2 (square meters or meters squared)

(We have our answer, dont forgot to write your units.)

So we've figured out the area of the base. Now onto the triangles:

(b×h) ÷ 2 = A

(Write out formula)

(8 × 6) ÷ 2 =

(Input values)

48 ÷ 2 =

(Use PEMDAS to solve this correctly. We did whatever was in the parenthesis first, which was multiplication.)

A = 24m^2 (square meters or meters squared)

(We have our answer.)

Now we've found the area of the base of the pyramid and one of the sides of the pyramid, but we're almost done! There's four sides to the pyramid, they're all the same. So since we found the area for one, we can multiply that by 4 to find the area of all sides added together:

24 × 4

(area of a side × total sides)

= 96m^2

All that's left is adding the 96 to the area of the base to get our total surface area of the pyramid:

96 + 64 = 160

The surface area of the pyramid is 160m^2(square meters or meters squared)

(Hope this helps :) )

8 0
2 years ago
Read 2 more answers
Jose put$1500 into a savings account. He earns 3% interest every year. How much simple interest will he earn at the end of 3 yea
ehidna [41]

Answer

$3142

Step-by-step explanation:

8 0
3 years ago
Question 15 of 20
grandymaker [24]

Answer: 3 inches

Step-by-step explanation:

4 0
2 years ago
Evaluate the series.<br><br> A)125<br> B) 38<br> C) 210<br> D) 165
Reika [66]
165 is answer we also use a formula
5 ( n/2(2a + ( n-1)d)
in that n=6 ,a=3 , d= 1

4 0
3 years ago
Read 2 more answers
-51 = -t/6 please help
Anvisha [2.4K]

Answer:

T=306

Step-by-step explanation:

Simplify both sides of the equation and separate the variable

(or just times 51 by 6)

5 0
3 years ago
Read 2 more answers
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