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jok3333 [9.3K]
3 years ago
10

The area of Nathan's bedroom rug is 15 square feet.The longer side measures 5 feet. His living room rug is twice as long and twi

ce as wide as the bedroom rug.
Mathematics
1 answer:
Orlov [11]3 years ago
3 0
The one in his living room is 30 feet
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Simplify -4/7 + (-4/3)
Ksenya-84 [330]
-4/7 - 4/3 

- 12/21 - 28/21 = -40/21

your answer is -1 19/21

hope this helps
6 0
3 years ago
Aubrey is making cone-shaped hats for a birthday party. She mistakenly thinks that she will need about 104 square inches of pape
jenyasd209 [6]

Answer:

C. About 75 in²; Aubrey found the surface area of the cone and included the base.

Step-by-step explanation:

In the questions above we were given the following:

Cone with

Diameter(D) = 6 inches

Slant height (l) = 8 inches.

Aubrey made an error in her calculation.

She found the Total Surface area of the cone using the formula:

Total Surface Area of a cone = πrl + πr²

= πr(l + r)

The Total surface area of a cone is the calculated as Sum of the curved surface area of a cone and the base of the cone.

Where:

Curved surface area of the cone is calculated as = πrl

Base of a cone is calculated as = πr²

Where r = radius of the cone

l = slant height of the cone

In the question, we were given

slant height(l) = 8 inches.

radius = Diameter ÷ 2 = 6÷2 = 3 inches.

Using π = 3.14

Surface area = 3.14 × 3(8+3)

= 9.42 × 11

Surface area = 103.62 in²

Approximately to the nearest inch = 104 in² or 104 square inches.

But this answer is WRONG.

The RIGHT FORMULA Aubrey should have used is

Curved Surface Area or the Lateral Area of a Cone = πrL

slant height(l) = 8 inches.

radius = Diameter ÷ 2 = 6÷2 = 3 inches.

Using π = 3.14

Curved Surface Area of a Cone = πrL

= 3.14 × 3 inches × 8 inches

= 75.36 square inches or 75.36in²

Approximately to the nearest inch = 75 square inches or 75 in².

This is the correct answer.

The error Aubrey made was she calculated the Total surface area of the cone which includes the base of the cone instead of calculating the curved surface area of the cone only.

Hence, from the above calculation , we can see that Option C "About 75 in²; Aubrey found the surface area of the cone and included the base" is the correct option.

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3 years ago
Write a story problem that represents 528 ÷ 24.
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$528 was raised by a team of 24 students. If it's divided evenly among them, how much money will each student earn?
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If you toss a coin 4 times, what is the probability of landing heads, heads, tails, heads and then heads?
storchak [24]
50 percent chance for either one
7 0
3 years ago
Read 2 more answers
Which statement best describes the electric field around a positive charge?
horrorfan [7]

Answer:

C. Lines with arrows that point outward radiate from the charge in all

directions.

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2 years ago
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