Use Net to find the lateral area of the prism. Please show how to work the problem out please

Mathematics

2 answers:

qwelly [4]4 years ago

4 0

The square all the way on the left the area would be 88 because 11 x 8 = 88. Then the middle square's area would be 165 because 15 x 11 is 165. Then the right square's area is 187 because 11 x 17 is 187. If you add all of those it is 440. then for the triangles, the width would be 15 and the hight would be about 11 so 1/2 x b x h = 1/2 x 15 x 11 = 15 x 5.5 = 82.5. 82.5 + 440 is 522.5. So 522.5 is your answer hope this helps.

qaws [65]4 years ago

3 0

Think of the three rectangles as a single large rectangle and find its area.

For the large rectangle made up of the three small rectangles:
Length = 8 cm + 15 cm + 17 cm = 40 cm
Width = 11 cm

area = length * width

area = 40 cm * 11 cm

area = 440 cm^2

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Select the equation in point-slope form for the line that passes through the point (1, –1) and has a slope of 4.

Dvinal [7]

Answer:

$\large \boxed{y + 1 = 4(x - 1)}$

Step-by-step explanation:

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$\begin{array}{rcl}y - (-1) & = & 4(x - 1)\\y + 1 & = & 4(x - 1)\\\end{array}\\\text{The equation for the line in point-slope form is $\large \boxed{\mathbf{y + 1 = 4(x - 1)}}$}$

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3 years ago

the length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions

KIM [24]

Let
x---------> the length of the rectangle
y--------> the width of the rectangle

we know that
A=84 ft²
[area of rectangle]=x*y-----> 84=x*y-----> equation 1
x=y-5------> equation 2
substitute 2 in 1
84=[y-5]*y-----> 84=y²-5y---------> y²-5y-84=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solution is
y=12
x=y-5-----> x=12-5-----> x=7

the answer is
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the width of the rectangle is 12 ft

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