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konstantin123 [22]
3 years ago
12

Please answer ASAP. You need to find what the mistake Page made. WILL AWARD BRAINLEST TO WHOEVER GIVE CORRECT ANSWER!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer: She added 7x and 3y

Step-by-step explanation: The final answer should be 7x + 3y, not 10xy.

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The otherSites Squared10.A cylinder has a diameter of 12 meters and a height of 9 meters. What is thetotal surface area of the c
Gelneren [198K]

The total surface area of a cylinder is given by the formula

\begin{gathered} A_{cylinder}=2circular\text{ area+curved surface area} \\ =2\pi r^2+2\pi rh \end{gathered}

Given diameter, d=12meters, we will solve for radius

\begin{gathered} \text{diameter,d}=2\times radius,r \\ d=2r \\ r=\frac{d}{2} \\ r=\frac{12m}{2} \\ r=6m \end{gathered}

The height is given as 9meters

Substituting for r and h in the formula will give

\begin{gathered} A_{cylinder}=2\pi r^2+2\pi rh \\ r=6m;h=9m;\pi=3.14 \\ A_{cylinder}=2\times3.14\times6^2+2\times3.14\times6\times9_{} \end{gathered}\begin{gathered} A_{cylinder}=6.28\times36+6.28\times54 \\ =226.08+339.12 \\ =565.2m^2 \end{gathered}

Hence the surface area of the cylinder is 565.2m²

8 0
1 year ago
ted and robin each gave a basket of green apples to their friend lily. ted's basket contains 5 apples, each weighing 7 1/4 ounce
nekit [7.7K]

Answer:

Step-by-step explanation:

Ted had 5 apples weighing 7¼

7¼×5=?

29/4×5=116/4

116/4=29 ounces

Robin had 6 apples weighing 6½

6½×6=?

13/2×6=78/2

78/2=39 ounces

Difference = 39-29=10 ounces

3 0
3 years ago
Find the total area of the four walls of a room 12 m long, 10 m wide and 4 m high.
Radda [10]

Answer:

<h2>416m^2</h2>

Step-by-step explanation:

<h3>Area = Length * Width</h3><h3>Volume = Length * Width * Height</h3>

<h3>As we all can see,from the question we were given the parameters for calculating volume instead of the ones for calculating "area"</h3>

<h3>But from the the parameters, we can calculate for the total surface area</h3>

<h3>Floor = 12m ×10m = 120m^2</h3>

<h3>Roof = 12m × 10m = 120m^2</h3>

<h3>Front and back walls (x2) = 10m × 4m ×2 = 80m^2</h3>

<h3>Side walls (x2) = 12m × 4m × 2 = 96m^2</h3><h3>Total surface area</h3>

<h3>= 120m^2 + 120m^2 + 80m^2 + 96m^2</h3>

<h3>= 416 m^2</h3>
8 0
2 years ago
$210 at 8% for 7 years
Genrish500 [490]
The answer is $327.60
7 0
3 years ago
Use the given conditions to write an equation for the line in slope-intercept form. Slope = -3, passing through (-5, 3) *
tekilochka [14]

Answer:

y=-3x+3

Step-by-step explanation:

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6 0
2 years ago
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