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2 years ago

How do u do the surface area of a prism

Mathematics

1 answer:

Serggg [28]2 years ago

5 0

Since hte front and back are the same and they are both triangles. The formula is A=1/2BH
And you can multiply by 2 since the measurements are the same.
A=1/2BH
A=1/2⋅1⋅2
A=1
1⋅2=2

So the front and back's area is 2.
For the sides, the measurements are different so you have to do them separately.

The right side. It is a rectangle so this is the formula.

A=BH
A= 3⋅2.2
A=6.6ft^2

The left side

A=BH
A=2⋅3
A=6

Finally, you add the answers all together and that is the surface area of the prism.

6+6.6+2=14.6

The surface area of this prism is 14.6 sq feet.

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Help me, please! I'll give a brainlist point! :)

Allisa [31]

Answer:

105

Step-by-step explanation:

Area of a trapezoid is given by the formula:

A = (a+b)÷2×h

(where h is the vertical height, and a and b are the parallel lines)

Substituting values given gives us:

A = (6+15)÷2×10

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1 year ago

Read 2 more answers

What is the perimeter of triangle ABC ?

blagie [28]

Answer:

$9+\sqrt{41}$

Step-by-step explanation:

From C-A, it goes from y=1 to y=5, so that 4 units

From A-B, it goes from x = -1 to x = 4, that is 5 units

Now, to find distance from B to C, we need to use the distance formula:

$D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}$

Where the variables are the respective points of B and C,

B (4,5) & C(-1,1)

So x_1 =4, y_1=5, x_2=-1, y_2=1

Plugging into the formula we get:

$D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\D=\sqrt{(1-5)^2+(-1-4)^2}\\D=\sqrt{16+25}\\ D=\sqrt{41}$

Summing it all (perimeter is sum of 3 sides):

Distance = $4+5+\sqrt{41}\\ =9+\sqrt{41}$

3rd answer choice is right.

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3 years ago

Fran drew a triangle with no congruent sides and one right angle.Which term accurately describes a triangle?Select all that appl

strojnjashka [21]

Scalene and right, since:

There is a right angle
and scale means that there are no angles that are the same.

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

504

Step-by-step explanation:

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