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AVprozaik [17]
3 years ago
5

Find the circumference of a circle with radius, r = 10.5m.Give your answer in terms of π .

Mathematics
1 answer:
forsale [732]3 years ago
8 0

Answer:

Circumference of circle =2πr=2π×10.5=21πm

Step-by-step explanation:

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The diameter of this beach ball is 12 inches.
Wittaler [7]

Answer:

288π or 904.78

Step-by-step explanation:

We know that the diameter of this beach ball is 12 inches and we want to determine how much air it can hold using the formula for the volume of a sphere which is \frac{4}{3} × π × r³ where 'r' is the radius. In the question we are given the diameter not the radius but we can half the diameter to find the radius so 12 ÷ 2 = 6. The radius of the beach ball is 6 inches so let's work out how much air it can hold.

Volume = \frac{4}{3} × π × r³

→ Let's substitute in the values

Volume = \frac{4}{3} × π × 6³

→ Simplify

Volume = \frac{4}{3} × π × 216

→ Simplify further

Volume = 288π or 904.78

5 0
3 years ago
Read 2 more answers
Lists bout 4 packs of socks for 36$ how many packs of socks can she buy for 54$ Find unit rate to solve this
Vika [28.1K]

Answer:

She can buy 6

Step-by-step explanation:

4=36

1=9

54/9=6

7 0
3 years ago
Sue buys 5 pieces of fabric.Each piece is 1 7/10 yards long.What is the total length of the fabric she buys?One yard of the fabr
irina [24]

Answer:

The total length of fabric sue buys is 8.5 yards and total cost of the fabric is $42.5 .

Step-by-step explanation:

As given

Sue buys 5 pieces of fabric.

Each\ piece\ is\ 1 \frac{7}{10}\ yards\ long.

i.e

Each\ piece\ is\ \frac{17}{10}\ yards\ long.

Total\ length\ of\ fabric\ sue\ buys = \frac{5\times 17}{10}\ yards

Total\ length\ of\ fabric\ sue\ buys = \frac{85}{10}\ yards

In the decimal form

Total length of fabric sue buys = 8.5 yards

As given

One yard of the fabric costs $5

Total\ cost\ of\ fabric\ sue\ buys = 8.5\times 5

                                                            = $ 42.5  

Therefore the total length of fabric sue buys is 8.5 yards and total cost of the fabric is $42.5 .


5 0
3 years ago
2x / 2x is equals to?​
Bond [772]
It’s equal to 1

2x divide by 2x = 1
— —
2x divide by 2x 1

which equals to 1
5 0
3 years ago
√−100 = ___ +_____i<br> ...
Natalija [7]

Answer:

Step-by-step explanation:

Rewrite this as

\sqrt{(-1)(100)}

Knowing that i-squared = -1:

\sqrt{(i^2)(100)}

Both i-squared and 100 are perfect squares, so this simplifies to

±10i

7 0
3 years ago
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