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matrenka [14]
3 years ago
15

What is the difference between surface area and volume? formulas please!

Mathematics
2 answers:
Nastasia [14]3 years ago
3 0
Surface area is the combined areas of all the sides of the shape and volume is the area within the shape

for example if you had a box filled with water the area of the box is the surface area and the amount of water would represent the volume
Masteriza [31]3 years ago
3 0
Surface area is a quantity of measurement associated with 2 dimensional shapes.
Example:  Area of Rectangle = Length * breadth
                   Area of triangle      = (1/2) * base* height.
While:
Volume is a quantity of measurement associated with 3 dimensional solid shapes.
Example:  Volume of Cuboid = Length * breadth * height
                   Volume of sphere      = (4/3) * Pi* r^3.

We can see that Area is 2 dimensional while volume is 3 dimensional.

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Jackie and Rachel both worked during last summer and made $960 each. Rachel worked 16 hours more than Jackie, but Rachel earned
Pavel [41]

Answer:

The number of hours Jackie worked  = 80hours

Step-by-step explanation:

Last summer:

Jackie made $960

Rachel made $960

let number of hours Jackie worked = x

Rachel worked 16 hours more than Jackie:

Number of hours Rachel worked = x + 16

if Jackie earned $y  per hour

Rachel earned $2 less per hour = y-2

Jackie: 960 = x × y = xy

Rachel: 960 = (x+16)(y-2)

960 = xy -2x +16y -32

recall xy = 960, insert the value for xy

960 = 960 - 2x +16y -32

- 2x +16y -32 = 0

2x -16y = -32

x-8y = -16

x = 8y-16

recall xy = 960, insert the expression for x

(8y-16)y = 960

8y² -16y = 960

y² -2y - 120 = 0

y²+10y-12y -120 = 0

y(y+10) -12(y+10) = 0

(y-12) = 0 or (y+10) = 0

y = 12 or -10

since y can't be negative, y = 12

x = 8y-16

x = 8(12) -16 = 80

The number of hours Jackie worked = x = 80 hours

7 0
3 years ago
The base of a triangle is seven less than twice its height. If the area of the triangle is 102 cm2, find the length of the base.
Shalnov [3]

Answer:

195

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The question is in the photo/image
Lina20 [59]
The answer is <span>π8^2 or about 201.06</span>
3 0
3 years ago
Henry's current age is 10 times Justin's current age. In 6 years Henry's age will be 4 times Justin's age. Which system of equat
Anna11 [10]
The answer is C: H=10J
                             H+6=4(J+6)
8 0
3 years ago
Please try to give me the answers
gladu [14]

Answer:

a = 1, b = 2, c = 3

Step-by-step explanation:

a +  \frac{1}{b +  \frac{1}{c} }  =  \frac{10}{7}  \\  \\ a +  \frac{1}{b +  \frac{1}{c} }  = 1 +  \frac{3}{7}  \\  \\ a +  \frac{1}{b +  \frac{1}{c} }  = 1 +   \frac{1}{\frac{7}{3} }  \\  \\ a +  \frac{1}{b +  \frac{1}{c} }  = 1 +   \frac{1}{2 + \frac{1}{3} }  \\  \\ equating \: like \: terms \: on \: both \: sides \\  \\ a = 1 \\  \\ b = 2 \\  \\ c = 3

5 0
2 years ago
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