All categories

2 years ago

If the area of a circle is 20.4 units squared, what is the radius?

Mathematics

1 answer:

dmitriy555 [2]2 years ago

6 0

Answer:

r = 2.55

Step-by-step explanation:

The formula for finding the radius of a circle using the area is r = √A/π

with the r being the radius. the A being the area, and the π being pi (we'll use 3.14).

So the equation should look like this:

r = √(20.4/3.14)

Find the quotient of 20.4/3.14 and round to the nearest tenth

r = √6.5

Find the square root and round to the nearest hundredth

r = 2.55

You might be interested in

Solve the compound inequality 10 >= 7 + 3x and 9-4x<=1 . show steps please.

pav-90 [236]

10 >= 7 + 3x -4x+9<=1
-7 >= -7 - subtract 7 -9<=-9 - Subtract 9
__________ ___________
3 >=3x - divide by 3 -4x<=-8 - divide by -4

x>=1 x<=2

5 0

2 years ago

Read 2 more answers

Help it’s urgent please answer All shown

ArbitrLikvidat [17]

Answer:

4. (Theater) 39%

5. (Bowling) 20%

6. (Pets) True, false, true

Hope this helps!

4 0

2 years ago

Read 2 more answers

Solve the proportion x/6=15/20

Rus_ich [418]

Change 15/20 to 3/4
Now we have $\frac{x}{6} = \frac{3}{4}$
multiply 6 to 3= 18 ÷ 4 = 4.5
x = 4.5

6 0

3 years ago

Read 2 more answers

The _____ is used to measure volume. a.meter b.gram c. liter

Savatey [412]

Liter is used to measure volume

3 0

2 years ago

Read 2 more answers

What is the area of the trapezoid? A. 24 mm2 B. 26 mm2 C. 32 mm2 D. 40 mm2

miss Akunina [59]

Answer:

A= 24 m

Step-by-step explanation:

The formula for the area of a trapezoid is A= $\frac{a+b}{2}$ x h.

Using the formula you plug in the values:

A= $\frac{4 + 12} 2}$ x 3

2. Now you simplify the equation and solve

A = $\frac{16}{2}$ x 3

A = 8 x 3

A = 24

6 0

2 years ago