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Elena L [17]
3 years ago
15

What is the surface area of this design PICTURE SHOWN

Mathematics
1 answer:
Assoli18 [71]3 years ago
8 0
To find the surface area you will need to find the areas of all 6 surfaces. The 2 bases are trapezoids and the 4 lateral faces are rectangles.

This shape is a trapezoidal prism.

Trapezoid 1:
A = 1/2h(b1 + b2)
1/2 x 8(8 + 12)
A = 80 square inches

Trapezoid 2 = 80 square inches

Rectangle 1
A=bh
8 x 8= 64 square inches

Rectangle 2
A= 64 square inches

Rectangle 3
A = 8 x 9
A = 72 square inches

Rectangle 4
A = 12 x 8
A = 96 square inches

S.A.= 96+72+64+64+80+80
S.A.=456 square inches
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I need help can somebody answer them with showing me the work thank you :D
Yuki888 [10]

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Question 2. It is graph two because the equation listed represents a quadratic function that is positive (graph opens up).

Question 3. It is graph 4 since the y-intercept is 2 and the only graph with that intercept is graph 4. Also, the equation represents a linear function.

Hope this helped :))

3 0
3 years ago
Solve the problem. Find the amount of money in an account after 12 years if $4700 is deposited at 5% annual interest compounded
Dmitrij [34]

Answer:

The correct answer is $8532.17

Step-by-step explanation:

The formula for calculating investments with compound interests is as follows:

(1+\frac{R}{t})^{tn}*P

Where:

R is the annual interest rate,

t is the number of times the investment is to be compounded in a year,

n is the number of years,

P is the principal amount invested.

Replacing in the formula with the given values you have:

(1+\frac{0.05}{4})^{4*12}*4700 = 8532.1678

3 0
3 years ago
2. Janine walks on a circular track whose radius is 60 meters. If she walks a total of 100 meters, which of the
katrin2010 [14]

Answer:

0.53πrad

Explanations:

Given the radius of the circular track = 60metres

If she walks a total of 100 meters, the length of the arc of the circle = 100metres

To calculate the radian angle she rotates about the center of the track, we will use the formula for calculating the length of an arc

L = θ/360° × 2πr

100 = θ/360× 2π(60)

36000 = 120π × θ

36000 = 376.8θ

θ = 36000/376.8

θ = 95.5°

Since 180° = πrad

95.5° = x

x = 95.5π/180

x = 0.53π rad

6 0
3 years ago
Find the slope of a line parallel to each given line -2/5x + 3
masha68 [24]

9514 1404 393

Answer:

  -2/5

Step-by-step explanation:

The slopes of parallel lines are the same. The slope of the given line is -2/5, the coefficient of x.

The slope of a parallel line is -2/5.

3 0
2 years ago
Read 2 more answers
I will give like a ton of points if you answer this correctly!
AleksandrR [38]

Answer:

<u>I'll give the choices by the number below:</u>

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3 years ago
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