7th Bell Ringer 12/4/24

Front

What is the formula for calculating the original price after a discount?

Back

Original Price = Sale Price / (1 - Discount Rate)

Front

If a hat costs $36 after a 25% discount, what was the original price?

Back

$48

Front

What is the formula for calculating the circumference of a circle?

Back

C = 2πr or C = πd

Front

What is the formula for finding the area of a circle?

Back

A = πr²

Front

If a meal costs $46.85 after a 23% tip, how do you find the original cost of the meal?

Back

Original Cost = Total Cost / (1 + Tip Rate) = $38.09

Front

What is the diameter of a circle?

Back

The diameter is the distance across the circle through its center, equal to twice the radius.

Front

How do you convert inches to feet?

Back

Divide the number of inches by 12.

Front

What is the cost per square foot for painting a circular sign if it costs $3.50 per square foot?

Back

$3.50 per square foot.

Front

How do you calculate the area of a circle with a diameter of 36 inches?

Back

First, find the radius (r = diameter/2 = 18 inches), then A = πr² = π(18)².

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 × Radius.