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Lerok [7]
3 years ago
7

Please help! and please hurry Im on a time limit!!

Mathematics
1 answer:
ra1l [238]3 years ago
5 0
The answer is only I and II
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PLEASE HELP WILL GIVE BRAINLIEST AND 20 POINTS
klio [65]
15 inches.

The side length of the base is 4. Find the surface area of the base only by squaring the side length - 4² - which is 16. The surface area of the base is 16 in². 

The surface area of the entire pyramid can be found using this equation:

SA = B +  \frac{1}{2} nbl 

Where:
- SA is the surface area (136 square inches)
- B is the area of the base (16 square inches)
- n is the number of triangles (4, because it's a square pyramid)
- b is the base length (4 inches)
- l is the slant length

Note that we have many parts of this equation, and all we need is the slant length. So, let's format the equation with what we have:

136 = 16 + \frac{1}{2} * 4 * 4 * l

So then we want to solve for l, the slant height. So, start by subtracting 16 from each side. This would give us: 

120 =  \frac{1}{2} * 4 * 4 * l

Now, multiply both sides by 2 to get rid of the fraction:

240 = 4 * 4 * l

Finally, divide both sides by four, twice (divide by 16):

15 =  l

So, we know that the slant height of this pyramid is 15 inches.

4 0
4 years ago
If the volume of cubical box is 1728^3 . find the total surface area of the box.​
Artist 52 [7]

Answer:

864 cm²

Step-by-step explanation: Volume of cube Side^3

Side of Cube= (1728)^1/3 = 12cm Total surface area = 6 x Side^2= 6 x 144 = 864 cm²

4 0
3 years ago
Solve for y. Then find the values of y that correspond
Ronch [10]
When y=0. Y+8(0)=-2. Y=-2. When y=1. Y=-8-2. Y=-10. When y=2. Y=-16-2. Y=-18.
8 0
3 years ago
A rectangle has a length of 6 feet and a width of 4 feet. The perimeter of the rectangle can be found using the equation =2×6+2×
evablogger [386]

Answer:

The correct answer is perimeter is given by 2 × ( l + w), where l is the length and w is the width of the rectangle.

Step-by-step explanation:

A rectangle has a length of 6 feet and a width of 4 feet. The perimeter of the rectangle can be found using the equation =2×6+2×4.

Let l be the length and w be the width of a rectangle.

Since there four sides of a rectangle, the perimeter is given by adding all the sides.

Therefore perimeter of the rectangle is given by l + l + b + b = 2×l +2×w = 2 × ( l + w).

The equation given by 2 × ( l + w) can also be used to find the perimeter of any given rectangle.

6 0
4 years ago
Emy has 13 1/4 kilograms of sweet potatoes.She gave away 5 12 kilogramsof corn to her neighbors.how many kilograms of corn than
Ahat [919]

Answer:

2 1/4 kg

Step-by-step explanation:

4 0
1 year ago
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