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3 years ago

How many cubes are needed to build this structure?

Mathematics

2 answers:

Elena-2011 [213]3 years ago

6 0

Hello!

I believe that 8 cubes are needed to build the given figure

I hope this helps!

Sonbull [250]3 years ago

3 0

Answer:

Option A. 8 cubes

Step-by-step explanation:

In the given structure we can count the cubes by dividing the figure in three sub parts.

Two in L shape and one below on L shape figure.

Two L shape figure contains 2×3 = 6 cubes

Cubes hidden under one L shape = 2

Then total cubes = 6 + 2 = 8

Option A. 8 cubes is the answer.

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MArishka [77]

Answer:

1184.5

Step-by-step explanation:

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3 years ago

What is the area of the two rectangles shown below?

DedPeter [7]

Answers are in bold.

For the first one:

The total area of both shaded and unshaded portions is equal to $3x(4x+7)$ , which simplifies to $12x^2}+21x$ . The area of the middle white portion is $(5x)(2x)$ , which simplifies to $10x^2$ . To find the area of the shaded portion, we do $12x^2}+21x - 10x^2$ . Combining like terms, we get $2x^2+21x$ as our expression for the area of the shaded portion of the first rectangle.

For the second one:

The total area of both shaded and unshaded portions is equal to $6n(8n+14)$ , which simplifies to $48n^2}+84n$ . The area of the middle white portion is $10n(4n+1)$ , which simplifies to $40n^2+10n$ . To find the area of the shaded portion, we do $48n^2+84n-40n^2+10n$ . Combining like terms, we get $4n^2+94n$ as our expression for the area of the shaded portion of the second rectangle.

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3 years ago

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VashaNatasha [74]

.......................................................................

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2 years ago

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2 years ago

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Answer:

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3 years ago