can someone help me with these:Find the radius, diameter and circumference of a circle with an area of 64 cm2. Write your answers as decimals rounded to the nearest hundredth.

Find the circumference and area of a circle that has a rectangle inscribed inside it with sides that are 9 by 12 centimeters. Write your answer as decimals rounded to the nearest hundredth. (hint: Draw this circle on your paper and find the length of the diagonal of the rectangle.)

you should know that Area = πr^2
and circumference is 2πr
and clearly the diameter is 2r

ao πr2=64
r = 8/√π

evaluate using your calculator and substitute in the above expressions.
Round off AFTER you have substituted,not before.

For your second question they have given you an excellent hint.
I will give you one more...
the radius of the circle is half the length of the diagonal of the rectangle.

a 9x12 rectangle has diagonals of

d = �ã(9^2 + 12^2) = �ã225 = 15

since these diagonals are also the diameter off the circle

A = ƒÎ (d/2)^2 = ƒÎ (15/2)^2 = 176.7

C = ƒÎd = ƒÎ(15) = 47.123

a 9x12 rectangle has diagonals of

d = square root of(9^2 + 12^2) = square root of 225 = 15

since these diagonals are also the diameter off the circle

A = pi (d/2)^2 = pi (15/2)^2 = 176.7

C = pi times d = pi(15) = 47.123

This question Find the circumference and area of a circle that has a rectangle inscribed inside it with sides that are 9 by 12 centimeters. Write your answer as decimals rounded to the nearest hundredth. (hint: Draw this circle on your paper and find the length of the diagonal of the rectangle.) is copyrighted material of Florida Virtual School. Please remove it and any solutions.

None of these are correct! Try doing your own work instead of copying off of stupid people that don't understand math!!!

waht do we do on circumfrence?

To find the radius, diameter, and circumference of a circle with an area of 64 cm^2, we can use the formula for the area of a circle, which is A = πr^2.

Given that the area is 64 cm^2, we can set up an equation:

πr^2 = 64

To solve for r, we need to isolate it. Divide both sides of the equation by π:

r^2 = 64/π

Now, take the square root of both sides to solve for r:

r = √(64/π)

To evaluate this using a calculator, divide 64 by π, and then take the square root of the result. This will give you the value of r.

Once you have the value of r, you can find the diameter by using the formula diameter = 2r.

To find the circumference, you can use the formula C = 2πr.

Note that the question asks us to round the answers to the nearest hundredth. Therefore, after calculating the values, make sure to round them to the nearest hundredth.

Now, let's move on to the second question.

The problem states that there is a rectangle inscribed inside a circle with sides that measure 9 cm and 12 cm.

The hint given is to draw the circle and find the length of the diagonal of the rectangle. This diagonal will be equal to the diameter of the circle.

In this case, the radius will be half the length of the diagonal of the rectangle.

To find the circumference, we can use the formula C = 2πr.

To find the area, we can use the formula A = πr^2.

Again, remember to round the answers to the nearest hundredth after evaluating the expressions.