Using a tape measure, find the circumference of several different circular objects (e.g., a CD, can of soda or food, paper cup, etc). Use these values, find the following:

$$c+d \quad c-d \quad c \cdot d \quad C \div d$$

Looking across these values for all of your circular objects as well as those of your peers, what patterns do you notice?

Information is given about a circle in the following t. Fill in the missing entries . r= radius, d= diameter, C= circumference, A= area. Use a calculator and give answers to two decimal places.

$$R= \sqrt {15}$$

Find d and c.

Choose the best estimate for the following temperatures.

A glass of lemonade: $10^{\circ} \mathrm{C}, 5^{\circ} \mathrm{C}$, or $40^{\circ} \mathrm{C}$,

If the radius is tripled in the two cones in Exercise 8 and the height remains the same, what happens to the volume?

If the radius is doubled in the two cones in Exercise 8 and the height remains the same, what happens to the volume?.

Choose the best estimate for the following temperatures.

Treat yourself for a fever: $29^{\circ} \mathrm{C}, 39^{\circ} \mathrm{C}$, or $99^{\circ} \mathrm{C}$ ?

If the height is doubled in the two cones in Exercise 8 and the radius remains the same, what happens to the volume?

Information is given about a circle in the following . Fill in the missing entries. r= radius, d= diameter, C= circumference, A= area. Use a calculator and give answers to two decimal places.

C= 26.8

Find r and d.

Choose the best estimate for the following temperatures.

A good day to go skiing: $-5^{\circ} \mathrm{C}, 15^{\circ} \mathrm{C}$, or $35^{\circ} \mathrm{C}$ ?

If the height is tripled in the two cones in Exercise 8 and the radius remains the same, what happens to the volume?

Choose the best estimate for the following temperatures.

The water temperature for swimming:$22^{\circ} \mathrm{C}, 39^{\circ} \mathrm{C}$, or $39^{\circ} \mathrm{C}$,

Find the surface area.

If all three dimensions of a box are tripled, the volume of the new box is _____ times bigger than the volume of the original box.

Find the surface area. Round your answers to the nearest square inch.