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ladessa [460]
3 years ago
14

A cone has a circular base with a diameter of 18 inches. the height of the cone is 40 inches. what is the approximate lateral ar

ea of the cone? use 3.14 for π and round to the nearest whole number. 565 square inches 580 square inches 1,131 square inches 1,159 square inches
Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
8 0
The lateral area of a cone is expressed as:

<span>Lateral surface area of a cone: L = πrs = πr√(r^2 + h^2)
                                                        </span>L = π(9)√(9^2 + 40^2)
<span>                                                        L = 1159.248 

Therefore, the correct answer is the last option. Hope this answers the question. Have a nice day.

</span>
hoa [83]3 years ago
7 0

Answer: D

Step-by-step explanation:

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8 0
3 years ago
At a competition with 8 runners, 2 medals are awarded for first and second
Dafna1 [17]

Answer: Option 'A' is correct.

Step-by-step explanation :

Since we have given that

Number of medals = 2

Number of runners = 8

We need to find the number of ways to award the medals.

We would use "fundamental theorem of counting" to find the number of ways.

So, number of ways is given by

8 × 7 = 56

Hence, option 'A' is correct.

4 0
3 years ago
Read 2 more answers
If Rachel were to paint her living room alone, it would take 2 hours. Her sister Fran could do the job in 5 hours. How many hour
snow_tiger [21]

Rachel and her sister Fran together can paint the living room in \frac{10}{7} hours

Given that

Rachel can paint half of the living room in 1 hour

Fran can paint \frac{1}{5}th part of the living room in 1 hour

Let's assume together they paint the living room in x hours

⇒ together they can paint \frac{1}{x}th part of the living room in 1 hour

By proportions,

⇒\frac{1}{2}+\frac{1}{5}= \frac{1}{x} {using operation proportions and addition}

⇒\frac{7}{10}=\frac{1}{x}

⇒x=\frac{10}{7}        

⇒ together they can paint \frac{7}{10}th part of the living room in 1 hour

It means, Rachel and her sister Fran together can paint the living room in \frac{10}{7} hours

Learn more about paint here:

brainly.com/question/15277377

#SPJ9

6 0
1 year ago
A rectangular placemat has an area of 2/3 of a square foot. The width is 1/3 of a foot.What is the length of the placemat?
Ray Of Light [21]

Answer:

The correct answer is 2 feet

8 0
1 year ago
There are 42. Children in the classroom each student will get 28 pictures and 46 erasers how many pictures with the teacher had
Stella [2.4K]

42 times 28 = 1176

i'm 90% sure it's right please tell me if it's not

7 0
3 years ago
Read 2 more answers
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