All categories

1 year ago

I need to find the surface area for this one pls help me

Mathematics

1 answer:

Alex1 year ago

4 0

Step-by-step explanation:

so, you got the volume but don't know how to find the surface area ? that is strange for me. what's the problem ?

the surface of a cube or rectangular prism consists of 6 sides that split (for a rectangular prism) into 3 pairs of equal sides :

top and bottom

left and right

front and back

all we need to do is calculate the areas of these 6 rectangles and add them up. that's it.

in our case

top and bottom : 5×4 × 2 = 20×2 = 40 in²

left and right : 4×4 × 2 = 16×2 = 32 in²

front and back : 5×4 × 2 = 40 in²

so, in total, the whole surface area of the prism is

40 + 32 + 40 = 112 in²

You might be interested in

Y=[x]-4<br> Determine the value of y, if x is 15

netineya [11]

Answer:

Step-by-step explanation:

15 - 4 = 11

6 0

2 years ago

Read 2 more answers

Find the inverse of the following function.

Naddik [55]

For this case we must find the inverse of the following function:

$f (x) = 8 \sqrt {x}$

For this, we follow the steps below:

We change f (x) to y:

$y = 8 \sqrt {x}$

We exchange the variables:

$x = 8 \sqrt {y}$

We solve for y:

$8 \sqrt {y} = x$

We divide between 8 on both sides of the equation:

$\sqrt {y} = \frac {x} {8}$

We raise both sides of the equation to the square to remove the root:

$y = (\frac {x} {8}) ^ 2\\y = \frac {x ^ 2} {64}$

So, the inverse is: $f ^ {- 1} (x) = \frac {x ^ 2} {64}$

ANswer:

Option C

3 0

3 years ago

I have an 88 in my math class, according to my teacher if I get a 75% on my final exam my grade will be 86. my final exam is wha

shusha [124]

Answer:

I think the answer is 30%

8 0

3 years ago

Read 2 more answers

What is (3.4) times 1,000

insens350 [35]

Answer:

3,400

Step-by-step explanation

Move the decimal place 3 times to the right (the number of zero's is how many places you go)

3 0

2 years ago

Read 2 more answers

What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1, 5)?

Masteriza [31]

Answer:c

Just had it on apex

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers