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3 years ago

Given two circles whose radii are 5" and 15", the ratio of their areas is

Mathematics

1 answer:

Serhud [2]3 years ago

6 0

Answer:

The answer to your question is ratio = 9

Step-by-step explanation:

Data

Circle 1 radius = 5''

Circle 2 radius = 15''

Process

1.- Calculate the area of circle 1

Area = πr²

Area = π(5)²

Area = 25π

2.- Calculate the area of circle 2

Area = πr²

Area = π(15)²

Area = 225π

3.- Calculate the ratio of the areas

ratio = 225π / 25π

= 9

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S = ut+ 16t²<br>Find the value of s when u = 2 and t = 3.

Fed [463]

Answer:

Step-by-step explanation:

Given,

u = 2

t = 3

Now, Finding the value of s

$s = ut \: + 16 {t}^{2}$

Plugging the values of u and t

$s = 2 \times 3 + 16 \times {( 3)}^{2}$

Calculate

$s = 2 \times 3 + 16 \times 9$

$s = 6 + 144$

Calculate the sum

$s = 150$

Hope this helps ..

Good luck on your assignment..

4 0

3 years ago

Read 2 more answers

The length of a rectangle is 5.5 feet. If the area is 44 square feet what is the width of the rectangle in feet

Anit [1.1K]

If you divide the area of the rectangle by the length (44÷5.5) the answer is 8. Your answer is 8 ft.

3 0

3 years ago

A shopkeeper had a profit of ₹ 50 on Monday , a loss of ₹ 20 on Tuesday and of loss of

Oliga [24]

Answer:

Step-by-step explanation:

Remark

I can't use a symbol for the currency. I'll just get the answer in numbers. You can add the symbol.

Solution

First day: 50

Second day: - 20

Third day: - 18

50 - 20 - 18 = 12

4 0

3 years ago

After 3 minutes, a submarine had descended to −320 feet. After 8 minutes, the submarine had descended to −420 feet. Assuming a l

LiRa [457]

Answer:

$d(t) = -20t - 260$

Step-by-step explanation:

The depth function is:

$d(t) = mt + b$

After 3 minutes, a submarine had descended to −320 feet.

This means that $d(3) = -320$ . So

$d(t) = mt + b$

$-320 = 3m + b$

After 8 minutes, the submarine had descended to −420 feet.

This means that $d(8) = -420$ . So

$d(t) = mt + b$

$-420 = 8m + b$

From the first equation:

$b = -320 - 3m$

$-420 = 8m + b$

$-420 = 8m - 320 - 3m$

$5m = -100$

$m = \frac{-100}{5}$

$m = -20$

And

$b = -320 - 3*(-20) = -260$

$d(t) = -20t - 260$

7 0

3 years ago

Please help with all 3

DerKrebs [107]

Answer:

1, volume=23×9×5

=1035

2, volume=(1/2×5×4)×20

... =200

8 0

2 years ago

Read 2 more answers