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3 years ago

A formula for finding SA, the surface area of a rectangular prism, is

Mathematics

1 answer:

goblinko [34]3 years ago

5 0

Answer:

Option C.

Step-by-step explanation:

It is given that the surface area of a rectangular prism, is

$SA=2(ab+ac+bc)$

where a, b, and c represent the lengths of the edges of the prism.

We need to find the surface area of this prism if a = 12 inches, b = 6 inches, and c = 4 inches.

Substitute a=12, b=6 and c=4 in the above formula.

$SA=2((12)(6)+(12)(4)+(6)(4))$

$SA=2(72+48+24)$

$SA=2(144)$

$SA=288$

The surface area of this prism is 288 sq.inches.

Therefore, the correct option is C.

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Find the volume of a pyramid with a square base, where the area of the base is

never [62]

Answer:

$V=60.28\ cm^3$

Step-by-step explanation:

Given that,

The area of the base = 13.2 cm²

The height of the pyramid = 13.7 cm

We need to find the volume of this pyramid. The formula can be given by :

$V=\dfrac{1}{3}Bh$

Put all the values,

$V=\dfrac{1}{3}\times 13.2\times 13.7\\\\V=60.28\ cm^3$

So, the volume of the pyramid is equal to $60.28\ cm^3$ .

4 0

3 years ago

Write an equation in slope-intercept form for the line that satisfies the following condition.

rosijanka [135]

Answer:

y = - x + 69

Step-by-step explanation:

Given the following :

Point on graph : (29, 8)

Equation of line ; y= 5x +17.

From the equation slope of line = 5

Intercept = 17

Slope of perpendicular line = - 1/5 ( negative reciprocal)

Using the equation :

y - y1 = m(x - x1)

From the Point given:

x1 = 29, y1 = 8

y - 8 = (- 1/5)(x - 29)

y - 8 = -1/5x + 29/5

y = -1/5x + 29/5 + 8

Multiply through by 5

y = - x + 29 +40

y = - x + 69

8 0

3 years ago

7.38

tangare [24]

Answer:

4 Pieces

Step-by-step explanation:

8 ÷ 2 = 4

8 0

3 years ago

Read 2 more answers

Help me out and earn Brainliest!!

Leona [35]

Step-by-step explanation:

Well there is no direct formula for calculating the orthocentre

well the process of finding the orthocentre is to find the altitudes of all the sides and then find their intersection points

Here in this question

The given triangle represents a right angled triangle with right angled at L(-3,2)

We know that the ortho centre in a right angled triangle is the right angled vertex

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Hence the required orthocentre is (-3,2) and it is on the Triangle

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2 years ago

For 100 points please answer right now....<br> What is the area of the figure?

Sophie [7]

Answer:

$64sq^{2}$

Step-by-step explanation:

first, break the irregular shape into two different rectangles and find the area of both

$12*3=36sq^{2}$

$4*7=28sq^{2}$

then, add them together to get the area which is $64 sq^{2}$

$(36sq^2+28sq^2=64^2)$

i hope i could help :)

6 0

3 years ago