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steposvetlana [31]
3 years ago
14

An object in the shape of a rectangular prism has a length of 5 inches, a width of 3 inches, and a height of 2 inches. The objec

t's density is 8.3 grams per cubic centimeter. Find the mass of the object to the nearest gram.
Mathematics
1 answer:
belka [17]3 years ago
8 0

Answer:

4,080grams

Step-by-step explanation:

the formula for density is:

d=\frac{m}{V}

where d is density, m is mass, and V is volume.

solving for m in the last equation:

m=d*V

so if we find the volume and multiply it by the density d=8.3gr/cm^3  we will get the mass of the object.

The volume of a rectangular prism is given by:

V=l*w*h

where l is length, w is width and h is height:

l=5in\\w=3in\\h=2in

we substitute to find the volume:

V=5in*3in*2in\\V=30in^3

since the density has units of cm^3 we need the volume also in units of cm^3 , so we make the conversion using:

1in^3=16.3871cm^3

multiplying by 30:

30in^3=491.612cm^3

and now we find the mass with the equation:

m=d*V

substituting d and V:

m=(8.3gr/cm^3)(491.612cm^2)\\m=4,080.36gr

the nearest gram is: 4,080grams

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