What is the greatest perimeter of a rectangle with an area of 39 square feet?

Answers

Answer 1
Answer: 39 = xy

Perimeter = 2x + 2y

The greatest perimeter could be 80 feet 

P = 2(1) + 2(39)

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What is the volume of a hemisphere with a radius of 3 cm, rounded to the nearest tenth of a cubic centimeter?

Answers

The Volume of sphere whose radius is 3 cm = 113 cm^(3) (rounded to the nearest tenth)

Volume= 113 cm^(3)

What is Volume of sphere?

The volume of a sphere = 4/3 r³, where r is the radius of the sphere.

Volume of sphere = (4)/(3) * \pi* r^(3)

                               = (4)/(3) * 3.14* (3)^(3)

                               = 4 x 3.14 x 9

                               =113.04 cm^(3)

                               ≈ 113 cm^(3) (rounded to the nearest tenth)

Learn more about Volume of sphere here:

brainly.com/question/9994313

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Final answer:

The volume of a hemisphere with a radius of 3 cm is approximately 56.6 cm³ when rounded to the nearest tenth of a cubic centimeter. This is calculated by halving the volume of a sphere with the same radius.

Explanation:

Calculating the Volume of a Hemisphere

The question asks for the volume of a hemisphere with a radius of 3 cm. The formula for the volume of a sphere is V = (4/3)πr³, and since a hemisphere is half of a sphere, the formula adapts to V = (1/2)(4/3)πr³. Using a radius (r) of 3 cm, we get V = (1/2)(4/3)π(3 cm)³.

Let's calculate the volume step by step:

  1. First, calculate the volume of the full sphere using the radius of 3 cm: V = (4/3)π(3³) cm³
  2. Compute the result: V = (4/3)(π)(27) cm³ = (36π) cm³
  3. Since we want the volume of the hemisphere, we divide this number by 2: V = (36π/2) cm³ = (18π) cm³
  4. Finally, we approximate π to 3.142 and round to the nearest tenth: V ≈ 18(3.142) cm³ ≈ 56.6 cm³

Therefore, the approximate volume of the hemisphere is 56.6 cm³, when rounded to the nearest tenth of a cubic centimeter.

Mia's cat weighs 13 pounds, 7 ounces. About what is that weight in kilograms?

Answers

so oz to kilograms
1 oz=0.0283495 kilograms

first convert 13 pounds to oz
16 oz=1 poiund
13 pounds=16 times 13 oz=208 oz
add
208+7=215 oz

so 215 oz=0.0283495 times 215=6.095=6
answer is 6 kilograms





Well, you've got a problem there, because "kilogram" is not a unit
of weight or force.  It's a unit of mass, and it has different weights
in different places.

On the moon, 13 pounds 7 ounces is the weight of about
36.8 kilograms of mass.

On Mars, 13 pounds 7 ounces is the weight of about
16.1 kilograms of mass.

On Earth, 13 pounds 7 ounces is the weight of about
6.09 kilograms of mass.

What's pie divide by 90

Answers

If we use 22/7 as pi we can say...

22/7 / 90 =
22/7 x 1/90 =

22/630 = 11/315 (in fraction form)

11/315 is the same as saying 11 divided by 315 which would work out to

about .035 rounded to the nearest thousandth

Rewrite using the Distributive Property.-6(2x + 7)

PLEASE HELP!
WILL GIVE BRAINLIEST FOR FASTEST CORRECT ANSWER!
50 POINTS!

Answers

Answer:

-12x - 42.

Step-by-step explanation:

-6 * 2x - 6 * 7

Now, multiply -6 by 2x and -6 by 7:

-12x - 42

So, the simplified expression is -12x - 42.

Answer: -12x - 42

Step-by-step explanation:

First, -6(2x) is -12x then -6(7) is -42

That makes -12x - 42

How many ounces go into 21 grams?

Answers

in one ounce there are 28.3495 grams 
                      rounded  28.25 grams
so in 21 grams there are 0.7407532009 ounces
                      rounded to  3/4 = .75
  there are 3/4 of an ounce in 21 grams
28.25 g per ounce

21 grams divided by 28.25

answer= 0.74

In the figure, a ‖ e, m ‖ n, and m∠3 = 108°
What is m∠6?
__ °

Answers

m\angle3=m\angle6=108^(\circ)
It's also 108° because they're congruent