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Aliun [14]
2 years ago
11

The deminsions of a rectangler prism are 5cm, 6cm, and Xcm. Its surface area is 148 cm2. Find the other deminsion.​

Mathematics
1 answer:
Zina [86]2 years ago
8 0

Answer:

<em>The other dimension is x=4 cm</em>

Step-by-step explanation:

<u>Surface Area of a Rectangular Prism</u>

Given a rectangular prism of dimension x, y, and z. Its surface area is calculated with the formula:

A = 2(xy + yz + xz)

We are given the dimensions y=5 cm and z=6 cm. We also have A=148 cm2. Substituting:

148 = 2(x*5 + 5*6 + x*6)

Dividing by 2:

74 = x*5 + 5*6 + x*6

Operating:

74 = 5x + 30 + 6x

Simplifying:

74 = 11x + 30

Subtracting 30:

44 = 11x

Dividing by 11:

x = 4 cm

The other dimension is x=4 cm

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so two fellows did all the carpeting in 10 days.

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how long did the other fellow work for?  well, it was working alongside the first one, and it was there for also 10 days.

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Answer:

Option D is the correct answer.

Step-by-step explanation:

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Given that the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

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At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

That is

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