Mathematics: What is the surface area of this triangular pyramid?

3.5 cubic centimeters is also equivalent to 3.5 ml...

What is the surface area of this triangular pyramid?

Ответ:

mfr81

26.01.2022

Mathematics

48.25 in^2

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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What is the surface area of this triangular pyramid?

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