Exploring Area and Perimeter in Geometry

This lesson covers the concepts of area and perimeter, including how to calculate the perimeter of various shapes and the circumference of circles. It explains the formulas for finding the area of circles, rectangles, parallelograms, and triangles, and discusses the importance of using perpendicular base and height. The lesson also includes examples of converting units and finding the area of irregular figures by breaking them into simpler shapes.

How do you find the perimeter of a shape?

• Divide the diameter by pi

• Square the radius of the shape

• Add up all the side lengths

• Multiply the base by the height

What formula is used to calculate the circumference of a circle?

• Circumference = pi * diameter

• Circumference = radius squared * pi

• Circumference = 2 * pi * radius

• Circumference = pi * radius

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

• Radius is equal to the diameter

• Diameter is double the radius

• Radius is half the diameter

• Diameter is half the radius

What is the formula to calculate the area of a circle?

• Area = pi * radius squared

• Area = 2 * pi * radius

• Area = pi * diameter squared

• Area = circumference * radius

How do you find the area of a parallelogram?

• Multiply the base by the height

• Add all the sides together

• Divide the base by the height

• Multiply the base by two and add the height

How do you find the missing height of a parallelogram if you know the area and the base?

• Add the base to the area

• Subtract the base from the area

• Divide the area by the base

• Multiply the base by the area

How do you convert square inches to square feet?

• Multiply by 12

• Divide by 12

• Multiply by 144

• Divide by 144

What is the area of a triangle with a base of 6 and a height of 8?

• 12 square units

• 24 square units

• 48 square units

• 14 square units

What is the area of a square with sides of length 6?

• 18 square units

• 36 square units

• 12 square units

• 24 square units

How do you calculate the area of a trapezoid?

• Divide it into a rectangle and a triangle, then add their areas

• Multiply the base by the height

• Add all the sides together

• Square the length of one of the bases