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Liula [17]
3 years ago
6

Use the net to find the lateral area of the cylinder​

Mathematics
2 answers:
Naddik [55]3 years ago
6 0

Answer : The lateral area of cylinder is, 282.6in^2

Step-by-step explanation :

Formula used to calculate the lateral area of cylinder is:

Lateral area of cylinder = 2\pi \times r\times h

where,

r = radius of cylinder = 5 in

h = height of cylinder = 9 in

Now put all the given values in the above formula, we get:

Lateral area of cylinder = 2\times 3.14\times (5in)\times (9in)

Lateral area of cylinder = 282.6in^2

Therefore, the lateral area of cylinder is, 282.6in^2

Elena L [17]3 years ago
4 0

Answer:

The answer to your question is:  A = 282.6 in²

Step-by-step explanation:

Data

height = 9 in

radius = 5 in

Formula

                A = 2πrh

Process

               A = 2(3.14)(5)(9)

               A = 282.6 in²

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The length of line PQ is 7.5 inches. what is the absolute error of the measurement?
Rashid [163]

Answer:

The absolute error of the measurement is 0.25 inches

Step-by-step explanation:

we know that

The absolute error of a measurement is equal to one  half the unit of measure.

In this problem we have

7.5 inches

The measurement is given  by 0.5 inches

So

the absolute error of this  measurement is  

\frac{1}{2}(0.5)=0.25\ in

Therefore

the exact measurement could be between  

7.5 (+/-) 0.25 in

That is, between  7.25 in and  7.75 in

4 0
2 years ago
A construction crew has just finished building a road. The crew worked for 8 days. If they built 2 1/6 kilometers of road each d
Luba_88 [7]

Answer:

13km

Step-by-step explanation:

Given data

Time= 8 days

Speed= 2 1/6 kilometers per day = 13/6 kilometers per day

Distance= ??

We know that

Speed= distance/time

therefore, Distance= speed*time

substitute

Distance= 13/6*8

Distance= 104/8

Distance= 13 km

Hence the crew did 13km

4 0
2 years ago
A metallurgist has an alloy with 5% titanium and an alloy with 30% titanium. He needs 100 grams of an alloy with 15% titanium. H
andrey2020 [161]
Let us convert the percentages to decimal format first.. so 5% is just 5/100 or 0.05 and 15% is just 15/100 or 0.15

so hmmm, so, let's say it needs "x" amount and "y" amount of each respectively, so, whatever "x" and "y" are, they must add up to 100, and whatever their concentration is, must add up to what the mixture yields

thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{5\% alloy}&x&0.05&0.05x\\
\textit{30\% alloy}&y&0.30&0.3y\\
-----&-----&-------&-------\\
mixture&100&0.15&15
\end{array}
\\\\\\
\begin{cases}
x+y=100\implies \boxed{y}=100-x\\
0.05x+0.3y=15\\
----------\\
0.5x+0.3\left( \boxed{100-x} \right)=15
\end{cases}

solve for "x"

what's "y"? well, y = 100 - x
4 0
3 years ago
Bro I am so bad at math and I need help ;-;
serg [7]

Answer:

1. M > -7

2. y < -1

3. m < -12

4. k > -2

5. c > -9

Please let me know if you need me to explain these answers! :)

4 0
2 years ago
Viyan age is 2 / 5 of the age of her eldest brother. If his brother's age is 35 years, then how old is viyan?
sashaice [31]
I think it’s 14 I hope
6 0
2 years ago
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