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3 years ago

A cuboid in which the sum of its dimensions is 9 cm., then the sum of its edge lengths - cm. (18 or 27 or 36 or 45)

Mathematics

1 answer:

ser-zykov [4K]3 years ago

5 0

The number of sides or edges on a cuboid are twelve, and the sum of the

edges is the sum of the twelve edges.

The sum of the edge lengths = 36 cm

Reasons:

The given parameters are;

The sum of the dimension of the cuboid = 9 cm

Required:

The value sum of the dimension of the edges the cuboid.

Solution:

The dimensions of a cuboid are; Length, l, width, w, and height, h

We get;

l + w + h = 9

The number of times that each dimension appear = 4 times

4 edges with the same length as the height, h

4 edges with the same length as the width, w

4 edges with the same length as the length, l

The sum of the edge lengths is therefore; Sum Edges = 4·l + 4·w + 4·h

Which gives;

Sum Edges = 4·l + 4·w + 4·h = 4 × (l + w + h) = 4 × 9 = 36

The sum of the edge lengths = 36 cm.

Learn more here:

brainly.com/question/12978944

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3 years ago

Read 2 more answers

Simplify the expression: 2(5a - 4a ) + 6a

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Hello from MrBillDoesMath!

Answer: 8a

Discussion :

Let's study the expression:

2(5a - 4a) + 6a

The boldfaced term simplifies to "a" as 5 = 4 = 1. So the expression becomes

2a + 6a

As 2 + 6 = 8, 2a + 6a = 8a.

Regards, MrB

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3 years ago

A cuboid in which the sum of its dimensions is 9 cm., then the sum of its edge lengths - cm. (18 or 27 or 36 or 45)​

A cuboid in which the sum of its dimensions is 9 cm., then the sum of its edge lengths - cm. (18 or 27 or 36 or 45)