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Alekssandra [29.7K]

4 years ago

12

Which of the following formulas would find the surface area of a right cylinder where h is the height, r is the radius, LA is th

e lateral area, and BA is the base area?
A. 2pi^2+pi r h
B. BA+La
C. BA+ 2 pi r ^2
D. Pi r^2+ pi r h
E. LA+ (pi r^ 2)

1 answer:

Sedbober [7]4 years ago

8 0

I'd say it is A but I think you have made a tpyo
It should be 2*PI*radius^2 + 2*PI*radius*height

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Propane is stored in a cylindrical tank with a diameter of 15 inches and a height of 48 inches. Which equation could be used to

Virty [35]

Step-by-step explanation:

remember. the radius is always half the diameter.

volume of a cylinder

pi × r² × height

pi×7.5²×48 = pi×56.25×48 = 8,482.300165... in³

volume of a sphere

4/3 × pi × r³

and that volume should be the same as the cylinder. so,

4/3 × pi × r³ = pi×56.25×48

4/3 × r³ = 56.25 × 48

1/3 × r³ = 56.25 × 12

r³ = 56.25 × 36 = 7.5² × 6² = (7.5×6)² = 45² = 2025

$r = \sqrt[3]{2025}$

which would be 12.65148998... in.

8 0

2 years ago

Whatis the value of x in the equation<br> x -<br> y = 30, when y = 15?<br> 8

Ostrovityanka [42]

Answer:

x=45

Step-by-step explanation:

30+15=45

4 0

3 years ago

Anyone know the answer to this algebra question?

lana [24]

Answer:

possibly the third maybe

4 0

3 years ago

M+1 3/8=5 What does m equal?

Arte-miy333 [17]

$\text{ The value of m is equal to 3.625 or }\frac{29}{8} \text{ or } 3\frac{5}{8}$

<em><u>Solution:</u></em>

Given that we have to find the value of "m"

Given expression is:

$m + 1\frac{3}{8} = 5$

<em><u>Let us first convert the mixed fraction to improper fraction</u></em>

Steps to follow:

Divide the numerator by the denominator.

Write down the whole number answer.

Then write down any remainder above the denominator.

Therefore,

$1\frac{3}{8}=\frac{8 \times 1+3}{8} = \frac{8+3}{8} = \frac{11}{8}$

Now the expression becomes,

$m + \frac{11}{8} = 5$

Keep the variable "m" on L.H.S and move the constant to R.H.S

$m = 5 - \frac{11}{8}\\\\m = \frac{5 \times 8 -11}{8}\\\\m = \frac{40-11}{8}\\\\m = \frac{29}{8}\\\\\text{In mixed fractions, we can write as }\\\\m = \frac{29}{8} = 3\frac{5}{8}$

Thus value of m is equal to 3.625 or $\frac{29}{8} \text{ or } 3\frac{5}{8}$

3 0

3 years ago

What is the solution to this equation? x + (- 14) = 4. (A) x = 10. (B) x = - 10. (C) x = - 18. (D) x = 18

Vika [28.1K]

First, you want to get x by itself on one side. We write the equation as $x-14=4$ . Since 14 is being subtracted from $x$ , we add it to both sides to cancel it out, $x-14+14=4+14$ or $x=18$ .

Your answer would be D.

4 0

4 years ago