GED Mathematical Reasoning TestQuantitative Problem Solving with MeasurementEasy
A landscaper is designing a triangular flower bed with a base of 10 feet and a height of 6 feet. What is the area of the flower bed?
- A60 square feet
- B30 square feet
- C16 square feet
- D120 square feet
Show answer & explanationAnswer & explanation
Correct answer: B. 30 square feet
The area of a triangle is calculated using the formula A = ½ × base × height. So, A = ½ × 10 feet × 6 feet = ½ × 60 = 30 square feet.
Why the other options are wrong
- A. This is base * height, forgetting to divide by two.
- C. This is the sum of the base and height, not the area.
- D. This is twice the base * height, an incorrect calculation.
Area of a Triangle
The amount of two-dimensional space enclosed by the three sides of a triangle.
- Calculated by half the product of its base and height.
- Formula: A = ½ × base × height.
- The height must be perpendicular to the base.
- Units are square units.
Memory trick: A triangle is half a rectangle, so its area is half too.