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3 years ago

A cube has volume 15 625 cm3. what is the surface area of the cube?

Mathematics

1 answer:

bulgar [2K]3 years ago

5 0

SA=3750cm2

The volume of a cube is determined by the formula
V=s3 where s is the measurement of each edge.

Since cube has six square faces, each of the faces will have the area of a square which we know to be A=s2. Therefore the total surface area of a cube will be the area of a square multiplied by six (faces).

SA=6s2

Solving for the length of edge (side):

V=s3

s=3√V=3√15625cm3

s=25cm

Solving for the surface area:

SA=6s2=6(25cm)2

SA=3750cm2

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2 years ago

A parking space shaped like a parallelogram has a base of 17 feet and a height of 9 feet if a mini car 6 feet long and five feet

lesantik [10]

Answer:

123 cm²

Step-by-step explanation:

First of all, we need to know how exactly to find the area of a parallelogram.

Area of parallelogram= Base*Height

PARALLELOGRAM-

BASE= 17 ft

HEIGHT= 9ft

AREA= 17*9= 153 cm²

The area of parallelogram, will be considered as WHOLE AREA.

Now,

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2 years ago

When calculating the circumference of a circle, sometimes the radius is given instead of the diameter. What is the relationship

Gwar [14]

The diameter is equal to the radius multiplied by 2.

3 0

2 years ago

Solve x^2+ 4x =15 thxssss

dmitriy555 [2]

Answer:

x=3/5

Step-by-step explanation:

x^2+4x=5

x+4x=5x

5x+2=5

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7 0

3 years ago

Assume that an average cell has a diameter of

emmasim [6.3K]

Given that the volume of a cell is 50 cubic micrometers. It says to find the number of cells present in 1 cubic centimeter.

So we need to first convert the units of volume of a cell, then we can find the total number of cells in 1 cubic centimeter.

We know 1 meter = 100 centimeters = 1000000 micrometers

So 1 centimeter = 10000 micrometers

Taking Cubic powers on both sides :-

1 cubic centimeters = 10¹² cubic micrometers

1 cubic micrometers = 10⁻¹² cubic centimeters

50 cubic micrometers = 50 × 10⁻¹² = 5 × 10⁻¹¹ cubic centimeters

So volume of one cell = 5 × 10⁻¹¹ cubic centimeters

Number of cells = $\frac{Total\;\; volume}{Volume\;\; of\;\; one\;\; cell} = \frac{1\;cm^{3}}{5 * 10^{-11}\;cm^{3}} = \frac{10^{11}}{5}$ = 2 × 10¹⁰ cells.

So, total number of cells = 2 × 10¹⁰ cells.

4 0

3 years ago