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1 year ago

Find the surface area of a rectangle solid with edges of length 2cm,5cm, and 7cm

Mathematics

1 answer:

MissTica1 year ago

6 0

The surface area for a rectangular prism is given to be:

$A=2(lw+lh+wh)$

where l, w, and h are the lengths of the solid.

From the question, we have:

$\begin{gathered} l=2\text{ cm} \\ w=5\text{ cm} \\ h=7\text{ cm} \end{gathered}$

Therefore, the volume is calculated to be:

$\begin{gathered} A=2((2\times5)+(2\times7)+(5\times7)) \\ A=2(10+14+35) \\ A=2(59) \\ A=118\text{ cm}^2 \end{gathered}$

The surface area is 118 square centimeters.

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Find the area of this figure

tankabanditka [31]

Answer:

it should be 2,744. i believe

Step-by-step explanation:

4 0

2 years ago

mr. devito was ordering pencils for apl fourth grade students. There are 118 fourth graders. Pencils come in packs of 6. He need

sweet [91]

Answer:

Mr. devito needs to buy 40 packs

Step-by-step explanation:

Given:

Total number of fourth grade students = 118

The number of pencils in one pack = 6

The number pencil each student gets =2

To find:

The number of packs of pencils that is to be bought = ?

Solution:

To give all the 118 fourth grade students each 2 pencils , the total number of pencils needed will be

= > $118 \times 2$

=> 236 Pencils

We know that a pack contains 6 pencils, so the number of pack that has to be bought , in order to have 236 pencils will be

=> $\frac{ \text{total number of pencils}}{\text{ number of pencils per pack }}$

On substituting the values

=> $\frac{236}{6}$

=> 39.33

=> 40

3 0

2 years ago

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data belowVolu

ki77a [65]

Given: Volume of brains in cubic centimeters.

Because it is talking about volume it is something you can ordered, difference can be found and are meaningful. There is also a natural starting zero point because something can have 0 volume. Like an empty cup. It has no water in it for volume.

Answer:

D. The ratio level of measurement is most appropriate because the data can be ordered, differences can be found and are meaningful, and there is a natural starting zero point

7 0

1 year ago

Of the 15 year olds at karate school 8 have black belts in 20 had Brown belts among 16 year olds 10 have black belts in 17 have

RSB [31]

Answer:

16 year olds had the higher ratio of black belts to brown belts.

Step-by-step explanation:

15 year olds: 8/28 students had black belts

8/28 = 28.6% had black belts

16 year olds: 10/27 students had bald belts

10/27 = 37.0% had black belts

5 0