SAT ACT Prep What is the area of the shaded region

The video tutorial explains how to find the area of a shaded region by first identifying the shapes involved, a rectangle and a circle. It covers the formulas for calculating the area of a rectangle (length times width) and a circle (pi times radius squared). The tutorial then demonstrates how to subtract the area of the circle from the rectangle to find the area of the shaded region.

What is the formula for calculating the area of a rectangle?

• Length minus width

• Length times width

• Length divided by width

• Length plus width

What is the relationship between the diameter and the radius of a circle?

• The diameter is equal to the radius

• The diameter is twice the radius

• The diameter is three times the radius

• The diameter is half the radius

How do you calculate the area of a circle?

• pi times radius squared

• pi times radius

• pi times diameter

• pi times diameter squared

What is the first step in finding the area of the shaded region?

• Multiply the area of the circle by the rectangle

• Divide the area of the rectangle by the circle

• Add the area of the circle to the rectangle

• Subtract the area of the circle from the rectangle

What is the final expression for the area of the shaded region?

• 10x squared plus pi x squared

• 10x squared minus pi x squared

• 10x squared times pi x squared

• 10x squared divided by pi x squared