Real-World Examples of Triangle Area Calculations for Kids

📚 Quick Study Guide

• 📐 A triangle is a polygon with three sides and three angles.
• 📏 The area of a triangle represents the amount of space it covers.
• ➕ The base of a triangle is any one of its sides. The height is the perpendicular distance from the base to the opposite vertex.
• ➗ The formula to calculate the area of a triangle is: Area = $\frac{1}{2}$ * base * height.
• 🧮 For a right-angled triangle, either of the two sides forming the right angle can be considered the base, and the other will be the height.
• 💡 Make sure the base and height are in the same units before calculating the area.
• ✏️ Remember, the area is always expressed in square units (e.g., square meters, square inches).

Practice Quiz

1. What is the area of a triangular sail on a toy boat if the base is 10 cm and the height is 8 cm?
   1. 40 cm²
   2. 80 cm²
   3. 18 cm²
   4. 90 cm²
2. A slice of pizza is shaped like a triangle. If its base is 20 cm and its height is 15 cm, what's its area?
   1. 300 cm²
   2. 150 cm²
   3. 35 cm²
   4. 75 cm²
3. A triangular garden plot has a base of 12 meters and a height of 9 meters. What is the area of the garden plot?
   1. 21 m²
   2. 108 m²
   3. 54 m²
   4. 63 m²
4. A road sign is shaped like an equilateral triangle. If we consider the base to be 30 inches and the perpendicular height to be approximately 26 inches, what's the approximate area of the sign?
   1. 780 in²
   2. 390 in²
   3. 56 in²
   4. 15 in²
5. The gable end of a house is shaped like a triangle. It has a base of 8 meters and a height of 3 meters. What is the area of the gable end?
   1. 24 m²
   2. 11 m²
   3. 12 m²
   4. 5.5 m²
6. A triangular flag has a base of 45 cm and a height of 30 cm. What is the area of the flag?
   1. 1350 cm²
   2. 75 cm²
   3. 675 cm²
   4. 37.5 cm²
7. A piece of cloth cut in a triangular shape is used for a craft project. The base measures 25 cm, and the height is 20 cm. What is the area of the cloth?
   1. 45 cm²
   2. 500 cm²
   3. 250 cm²
   4. 450 cm²