Exploring Area and Perimeter of Shapes

This video tutorial reviews the concepts of area and perimeter, which are essential for understanding volume and surface area of 3D figures. It covers formulas for calculating the area of rectangles, triangles, and circles, as well as methods for finding the perimeter and circumference of these shapes. The tutorial includes practice problems to reinforce these concepts, preparing students for more advanced topics in volume and surface area.

Why is it important to review area and perimeter before studying volume and surface area?

• Because they are not used in 3D figures.

• Because they are more difficult topics.

• Because they are foundational for understanding volume and surface area.

• Because they are unrelated concepts.

What is the formula for the area of a rectangle?

• Length + Width

• Length x Width

• 2 x (Length + Width)

• Length x Height

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

How do you find the area of a triangle?

• Base + Height

• Base x Height / 2

• Base x Height

• Base x Width

Tags

CCSS.6.G.A.1

What is the formula for the area of a circle?

• 2πr

• πr^2

• πd

• 2πr^2

Tags

CCSS.7.G.B.4

What is the perimeter of a rectangle with length 10.5 feet and width 4 feet?

• 29 feet

• 42 feet

• 14.5 feet

• 21 feet

Tags

CCSS.4.MD.A.3

How do you find the perimeter of a triangle?

• Multiply the base and height

• Add all three sides together

• Multiply all three sides together

• Add the base and height

Tags

CCSS.3.MD.D.8

What is the perimeter of a triangle with sides 17 cm, 6 cm, and 18.2 cm?

• 21 cm

• 41 cm

• 51 cm

• 31 cm

Tags

CCSS.3.MD.D.8

What is the formula for the circumference of a circle?

• 2πr^2

• πd

• 2πr

• πr^2

Tags

CCSS.7.G.B.4

If the diameter of a circle is 30 feet, what is the radius?

• 60 feet

• 45 feet

• 30 feet

• 15 feet

Tags

CCSS.7.G.B.4

What is the area of a circle with a radius of 12.2 cm?

• 76.6 cm^2

• 706.5 cm^2

• 467.36 cm^2

• 94.2 cm^2

Tags

CCSS.7.G.B.4