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otez555 [7]
2 years ago
8

Find the surface area of the pyramid. The side lengths of the base are equal.

Mathematics
1 answer:
Sav [38]2 years ago
3 0
If the side lengths of the base (12) are equal, then they are both 6. so the answer rounded to the nearest tenth is 148.7
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Determine the total surface area of each right triangle-based prism
levacccp [35]

Answer:

  • small prism: 630 m²
  • large prism: 2520 m²

Step-by-step explanation:

The total surface area of the prism is the sum of the base area and the lateral area. The base area is made up of two right triangles, so will be the product of the triangle leg dimensions. The lateral area is made up of three rectangles whose width is that of the prism and whose equivalent length is the perimeter of the triangle base.

For the smaller prism, the area is ...

  (20 m)(21 m) +(3 m)(20 m + 21 m + 29 m) = 420 m² +210 m² = 630 m²

The larger prism is similar, with a scale factor of 2, so its area will be 2² = 4 times that of the smaller prism:

  4×630 m² = 2520 m²

__

In summary, the total surface area of each prism is ...

  • small prism: 630 m²
  • large prism: 2520 m²
8 0
2 years ago
Mr & mrs have $5170 total in bank.. at end of month, mr deposits $450 & mrs deposits $626 into her account. they now hav
Valentin [98]
$5170.00+$450.00+$626.00 DIVIDED BY 2
4 0
3 years ago
Brandon buys a radio for $43.99 in a state where the sales tax is 7% what is the total Brandon pays for the radio?
babymother [125]
An increase by a percentage equal 1+percentage value multiplied by the original value.
7%=0.07
1+0.07=1.07
$43.99(1.07)=$47.0693
Round that to two decimal spaces.
$47.07
7 0
3 years ago
What is the height of a right circular cylinder made from a rectangular sheet of lengil
Talja [164]

Answer:

15 cm

Step-by-step explanation:

When the rectangular sheet rolled along its length, the breadth becomes the height of the cylinder, and the length becomes the circle, so the height is 15 cm

5 0
3 years ago
I understand the switching of positive and negative signs but I don’t understand how to get to the next step which is the answer
Finger [1]
2ab - 3a = a.(2b-3)

now the same thing

let's say n=1

a.(2b-3) + n.(2b-3) = (2b-3).(a+n)

Understood?

6 0
2 years ago
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