Area of a Rectangle
A rectangle has a base of 5 cm and a height of 4 cm. What is its total area?
20 square centimeters
What is the formula used to find the area of any triangle?
What is
\(A = \frac{1}{2} \times \text{base} \times \text{height}\)
(or base × height ÷ 2)
What does the letter "b" stand for in the triangle area formula?
base
To find the area of a rectangle with a base of 12 m and a height of 7 m, what numbers do you substitute into the formula A = b × h
12 and 7
A triangle has a base of 6 cm and a perpendicular height of 4 cm. What is its area?
What is 12 square centimeters?
When you replace a letter in a math formula with a real number from a drawing, what is this process called?
substitution
Use the box method to multiply a rectangle's dimensions: a base of 15 cm and a height of 6 cm. What is the area?
90 square centimeters
A triangle has a base of 10 meters and a perpendicular height of 7 meters. What is its area?
What is 35 square meters?
Set up the formula for a rectangle with a length of 15 cm and a height of 3 cm. Write out exactly what the substitution looks like.
A = 15cm x 3cm
A large rectangular playground has a base of 24 meters and a height of 10 meters. Using multiplication, what is its area?
240 square meters
To find the area of a triangle with a base of 14 cm and a height of 5 cm, you can multiply 14 by 5 and then do what step?
What is halve it (or divide by 2)?
Set up the formula for a triangle with a base of 8 m and a height of 12 m. Write out exactly what the substitution looks like.
\(A = \frac{1}{2} \times 8 \times 12\)
(or 8 × 12 ÷ 2)
A rectangle has an area of 48 square meters. If its base is 8 meters, what is its height?
6 meters
A triangle has an area of 20 square centimeters and a base of 10 cm. What is its perpendicular height?
What is 4 cm?
If a student writes A = 6 × 4 for a triangle with a base of 6 and a height of 4, what vital step did they forget to include in their formula setup?
halving or dividing by 2