Calculating Percentages and Circumferences

The video tutorial covers various mathematical problems related to sales tax, percentages, and geometry. It begins with calculating sales tax in Ohio, followed by selecting correct equations for New Mexico's tax rate. The tutorial then determines Nevada's sales tax rate and solves percentage problems. Finally, it explains how to calculate the circumference and radius of different objects using the formula involving pi.

What is the total price of an $8 item in Ohio after applying a 7.25% sales tax?

• $8.50

• $8.72

• $8.75

• $8.58

Which equation correctly represents the sales tax in New Mexico for an item costing c dollars?

• t = 5.125c

• t = 0.5125c

• t = c / 0.05125

• t = 0.05125c

How do you calculate the sales tax rate in Nevada if the sales tax is $0.46 on a $10 item?

• 0.046%

• 4.6%

• 46%

• 0.46%

What is 3.8% of 25?

• 0.95

• 1.25

• 1.05

• 0.85

What is 0.2% of 50?

• 0.1

• 0.01

• 0.05

• 0.2

Calculate 180.5% of 99.

• 178.695

• 180.5

• 179.5

• 181.5

If the radius of a ceiling fan is 2.8 feet, what is its approximate circumference using pi as 3.14?

• 18.6 feet

• 19.6 feet

• 17.6 feet

• 16.6 feet

What is the circumference of a water bottle cap with a radius of 13 millimeters?

• 81.7 millimeters

• 82.7 millimeters

• 80.7 millimeters

• 83.7 millimeters

How do you find the radius of a bowl if its circumference is 56.5 centimeters?

• Multiply 56.5 by 6.28

• Multiply 56.5 by 3.14

• Divide 56.5 by 6.28

• Divide 56.5 by 3.14

What is the radius of a drum if its circumference is 75.4 inches?

• 11 inches

• 14 inches

• 13 inches

• 12 inches