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horrorfan [7]
3 years ago
9

What is the surface area of this triangular pyramid?

Mathematics
1 answer:
lidiya [134]3 years ago
8 0

<em>48.25 in^2</em>

Step-by-step explanation:

The formula for the surface area of a pyramid is:

SA=B+\frac{1}{2}l(number of base sides)(b)

B represents the area of the base, which in this case is a triangle. We will figure out the area of the base first, using the formula for the area of a triangle.

A=\frac{1}{2}bh

A=.5*5*4.3

A = 10.75

Now we can plug in 10.75 for B.

SA=10.75+.5*5*3*5

The cursive L will be the lateral height, which is 5. Since there are 3 sides on the base we can put that in for the number of base sides, and the base is 5.

SA=

48.25 in^2

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WARRIOR [948]

Answer:

63

Step-by-step explanation:

9x7=(10x7)-1x(7)

=70-7

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3 years ago
Find the volume of the object 5ft 12ft pretty easy!
Volgvan

Answer:

V=75pi ft^3 or 235.619 ft^3

Step-by-step explanation:

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2 years ago
Which expression is equivalent to 2/3 (6x − 9y)?
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Answer:

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Step-by-step explanation:

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The probability of pulling out a bag of colored marbles is 2:5. If you were to pull colored marbles out of the bag one at a time
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THIS IS THE COMPLETE QUESTION BELOW;

The probability of pulling a green marble out of a bag of colored marbles is 2:5. If you were to pull colored marbles out of the bag one at a time, and putting the marble back each time for 600 tries, approximately how many time would you select a green marble?? ( explanation too) 7th grade Math

Answer:

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Step-by-step explanation:

Given from the question the probability of pulling a green marble out of a bag of colored marbles is 2:5

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