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zalisa [80]
3 years ago
9

A cylindrical grain silo is being built for Mr. Greenjeans. The silo is 13 meters tall with a diameter of 6 meters. If the entir

e silo is being fabricated from sheet metal, how many square feet of sheet metal will be needed to complete the silo?
Mathematics
1 answer:
Vilka [71]3 years ago
3 0

Answer:

The answer to your question is 301.44 m²

Step-by-step explanation:

Data

height = 13 m

diameter = 6 meters

Formula

Area of a cylinder = 2πr² + 2πrh

- Substitution

Area of a cylinder = 2(3.14)(3)² + 2(3.14)(3)(13)

- Simplification

Area of a cylinder = 56.52 + 244.92

-Result

Area of a cylinder = 301.44 m²

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mojhsa [17]
X=-8,3.
divide all terms by the two in the first term to get x^2+5x-24=0. Then find the factors. To do so, find what two numbers can be multiplied to get 24, and whether those two numbers can be added or subtracted to get the middle term (5). Since 8x(-3)=24 and 8-3=5, (x+8) and (x-3) are the factors. Then set the factors equal to zero. Add or subtract these numbers to the other side of the equation and you then get x=-8,3. These are the roots.
8 0
3 years ago
At barlow school 4/9 of the 873 students are boys at willow school 2/3 of the 630 students are girls which school has the greate
marishachu [46]

Answer:

There are 178 more boys in Barlow school as compared to Willow school.

Step-by-step explanation:

We are given the following in the question:

Barlow school:

Total number of students = 873

Number of boys =

=\dfrac{4}{9}\times 873 = 388

Willow school:

Total number of students = 630

Number of girls =

=\dfrac{2}{3}\times 630 = 420

Number of boys =

Total number of students - total number of girls

=630-420 = 210

Thus, Barlow school has greater number of boys than Willow school.

Difference between the number of boys =

=388-210\\=178

Thus, there are 178 more boys in Barlow school as compared to Willow school.

7 0
3 years ago
Please help its for a test and this is the only question im stuck on Tysm and have a great day.c:
Sonja [21]

Answer:

77.28

Step-by-step explanation:

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Answer:

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BEEN ASKING FIR AN HOUR: A rectangle's length is 3 feet shorter than 4 times the width. If we use w to represent the rectangle's
Tatiana [17]

Answer:

Step-by-step explanation:

w is the width of the rectangle, then the length would be 4w - 3.

A = lw

A = w(4w -3)

A =4w² - 3w

Hope this helped!!!

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3 years ago
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