The surface area is 47.1 sq in.
Step-by-step explanation:
Given,
The height (h) of the coin (cylinder shaped) = 5 inches
The radius (r) = 1.5 inches
To find the surface area of the coin.
We need to find the lateral surface area of the coin.
Formula
The surface area of the coin of radius r and height h is 2πrh.
Now,
Putting the value of h and r and π=3.14 we get,
Area = 2×3.14×1.5×5 sq inches
= 47.1 sq in
Hence, the surface area is 47.1 sq in.
Answer:
x=6
Step-by-step explanation:
Remember, the formula for area is the length times the width. So, if we know the width is 3, and we know the total area is 24, all we need to do is divide 24 by 3 to get 8. 8 is the split up side, the one that is x + 2. To find x, simply subtract 2 from 8. 8 - 2=6.
24/3=8
8-2=6
You just have to substitute the x for the given number and complete the equation. Leave the x-box and laziness and study
Answer:
What are you asking? If you're asking for the area of the prism, it's <em>774in²</em>.
Step-by-step explanation:
First you need to use this formula.
2(wl + hl + hw)
w = width
l = length
h = height
Since we already know what all of those values are, we don't need to do any solving for them.
In this case:
width = 9
length = 9
height = 17
Plug those numbers into the formula and solve.
2(9 × 9 + 17 × 9 + 17 × 9)
It would be easiest to multiply the numbers before doing your adding.
2(81 + 153 + 153)
Add.
2(387)
Multiply what is in the parenthesis with the number on the outside, 2.
There's your answer, <em><u>774</u></em>.
Since this is area, you have to specify the type of measuring you're using (example: inches, feet, yards) and you have to be sure to include the ² after the measurement you're using because you may get points off for that.
<u>774in²</u>
1) Johnson's profit is
... net profit = selling price - costs = $155 - 35.00 - 39.17 - 36.43 = $44.40
His net earnings per hour are then
... earnings/hours = $44.40 / (4.5 h) = $9.87/h
2) net profit = selling price - overhead - cost
... net profit = selling price - 0.45 × selling price - cost . . . . substitute for overhead
... net profit = 0.55 × selling price - cost
Given that overhead = 0.45 × selling price, we can find selling price by dividing by 0.45:
... selling price = overhead/0.45
Using this in the profit equation, we have
... net profit = 0.55×(overhead/0.45) - cost
... = (0.55/0.45) × $65.34 - 49.32 . . . . . . substitute given numbers
... net profit = $30.54
