Mathematics, 24.02.2020 22:39 flyingcerberus1408

How much wrapping paper will be needed to cover the figure below rounded to the
nearest tenth? HELP ASAP

125.9 cm^2
76 cm ^2
180 cm^2
100.1 cm^2

How much wrapping paper will be needed to cover the figure below rounded to the nearest tenth? HELP

Answers: 2

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Answer from: isabellamoneill

125.9 cm^2

Step-by-step explanation:

Since the box will be covered all around we need to find the area of the figure

Tthe formula to calculate area of a cuboid is : 2 (lw + wh + hl) (l: length, w: width, h: height)

2 × (2.2×9.1 + 2.2×3.8 + 9.1×3.8) = 125.9 cm^2

Answer from: shealene7

125.9 cm^2

Step-by-step explanation:

the data we have is

height = 2.2cm

long = 9.1cm

width = 3.8cm

the area of the top and bottom is given by:

long*width =9.1*3.8=34.58cm^2

since we need both the top and the bottom covered we multiply by 2:

2(34.58)=69.16cm^2

Now for the area of the front and back:

long*height=9.1*2.2=20.02cm^2

and also since we need both front and back we multiply by 2:

2(20.02)=40.04cm^2

the area for the sides:

width*height=3.8*2.2=8.36cm^2

and we multiply by 2 to get both sides:

2(8.36)=16.72cm^2

and finally we add all the areas:

area=69.16+40.04+16.72=125.9cm^2

the amount of wrapping paper needed is 125.9 cm^2

Answer from: Quest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

Answer from: Quest

x=half

step-by-step explanation:

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