Mathematics: Find the surface area of the cube shown below.

Find the surface area of the cube shown below.

Ответ:

Jasten

27.01.2022

Mathematics

S.A. = 37.5

Step-by-step explanation:

Each cube has six faces. All faces are congruent and each of them is a square.

The fromula of an area of a square is:

A=s^2

s - length of a side of a square

We have

$s=2\dfrac{1}{2}$

Convert it to a decimal

$s=2\dfrac{1}{2}=2.5$

Substitute to the formula of an area of a square:

A=(2.5)^2=(2.5)(2.5)=6.25

The Surface Area of a cube:

S.A.=6A

Substitute:

$S.A.=6\cdot6.25=37.5$

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Ответ:

kpruitt6359

10.08.2022

Mathematics

The answer is option E.

Step-by-step explanation:

The length of a line segment or the distance between two points can be found by using the formula

$d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

J(-4,2) and G(146,52)

The the length of the line segment joining the points is

$|JG| = \sqrt{ ({ - 4 - 146})^{2} + ({2 - 52})^{2} } \\ = \sqrt{ ({ -150})^{2} + ({ -50})^{2} } \\ = \sqrt{22500 + 2500} \\ = \sqrt{25000} \\ = 50 \sqrt{10} \\ = 158.11388$

We have the final answer as

158.1 to the nearest tenth

Hope this helps you

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Find the surface area of the cube shown below.

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