Area Of Trapezoids: Calculating the base or height of a trapezoid

The video tutorial explains how to solve trapezoid problems using algebra. It covers two main problems: finding one base (B1) and finding the height of a trapezoid. The instructor demonstrates how to use the trapezoid area formula and algebraic manipulation to solve for unknowns, emphasizing the importance of understanding the formula and applying algebraic techniques to find solutions.

What is the given area of the trapezoid in the first problem?

• 90 square centimeters

• 75 square centimeters

• 100 square centimeters

• 85 square centimeters

Which formula is used to find the area of a trapezoid?

• 1/2 * base * height

• base * height

• 1/2 * (B1 + B2) * height

• (B1 + B2) * height

What is the value of B1 after solving the equation?

• 20 centimeters

• 10 centimeters

• 5 centimeters

• 15 centimeters

What is the purpose of multiplying both sides of the equation by 2 in the problem-solving process?

• To increase the area

• To simplify the bases

• To find the height

• To eliminate the fraction

In the second problem, what is the given area of the trapezoid?

• 90 square inches

• 85 square inches

• 75 square inches

• 100 square inches

What is the height of the trapezoid in the second problem after solving?

• 8 inches

• 6 inches

• 5 inches

• 7 inches

What is the final step in solving for the unknown in these trapezoid problems?

• Dividing by the height

• Adding the bases

• Multiplying the area

• Subtracting known values