Area of a Triangle
Find the area of a triangle with a base of 10 cm and a height of 6 cm.
📘 Formula: A = ½ × base × height
⏱️ Time: 45 seconds
✅ Answer: A = ½ × 10 × 6 = ½ × 60 = 30 cm²
Find the area of a trapezoid with bases 6 cm and 10 cm, and height 4 cm.
📘 Formula: A = ½ × (b₁ + b₂) × h
⏱️ Time: 1 minute
A = ½ × (6 + 10) × 4 = ½ × 16 × 4 = ½ × 64 = 32 cm²
Find the area of a rectangle that is 6 cm long and 4 cm wide.
📘 Formula: A = l × w
⏱️ Time: 30 seconds
A = 6 × 4 = 24 cm²
Find the area of a square with side 5 cm.
📘 Formula: A = s × s
⏱️ Time: 30 seconds
A = 5 × 5 = 25 cm²
Find the total area of a rectangle (4×6) and a triangle (base 4, height 3).
📘 Formulas:
Rectangle: A = l × w → 4 × 6 = 24
Triangle: A = ½ × base × height → ½ × 4 × 3 = 6
⏱️ Time: 2 minutes
24 + 6 = 30 sq units
Find the area of a triangle with a base of 8 m and a height of 5 m.
📘 Formula: A = ½ × base × height
⏱️ Time: 1 minute
A = ½ × 8 × 5 = ½ × 40 = 20 m²
Find the area of a trapezoid with bases 5 m and 7 m, and height 3 m.
📘 Formula: A = ½ × (b₁ + b₂) × h
⏱️ Time: 1 minute 15 seconds
A = ½ × (5 + 7) × 3 = ½ × 12 × 3 = ½ × 36 = 18 m²
Find the area of a rectangle that is 12 m long and 5 m wide.
📘 Formula: A = l × w
⏱️ Time: 45 seconds
A = 12 × 5 = 60 m²
Find the area of a square with side 9 m.
📘 Formula: A = s × s
⏱️ Time: 45 seconds
A = 9 × 9 = 81 m²
Find the total area of a square (5×5) and a triangle (base 5, height 4).
📘 Formulas:
Square: A = s × s → 5 × 5 = 25
Triangle: A = ½ × base × height → ½ × 5 × 4 = 10
⏱️ Time: 2 minutes 30 seconds
25 + 10 = 35 sq units
Find the area of a triangle with a base of 12 ft and a height of 9 ft.
📘 Formula: A = ½ × base × height
⏱️ Time: 1 minute 15 seconds
A = ½ × 12 × 9 = ½ × 108 = 54 ft²
Find the area of a trapezoid with bases 8 ft and 12 ft, and height 6 ft.
📘 Formula: A = ½ × (b₁ + b₂) × h
⏱️ Time: 1 minute 30 seconds
A = ½ × (8 + 12) × 6 = ½ × 20 × 6 = ½ × 120 = 60 ft²
Find the area of a rectangle that is 15 ft long and 9 ft wide.
📘 Formula: A = l × w
⏱️ Time: 1 minute
A = 15 × 9 = 135 ft²
Find the area of a square with side 12 ft.
📘 Formula: A = s × s
⏱️ Time: 1 minute
A = 12 × 12 = 144 ft²
Find the total area of a rectangle (10×3) and a trapezoid (bases 6 & 10, height 3).
📘 Formulas:
Rectangle: A = l × w → 10 × 3 = 30
Trapezoid: A = ½ × (b₁ + b₂) × h → ½ × (6 + 10) × 3 = ½ × 16 × 3 = 24
⏱️ Time: 3 minutes
30 + 24 = 54 sq units
Find the area of a triangle with a base of 15 in and a height of 4 in.
📘 Formula: A = ½ × base × height
⏱️ Time: 1 minute 30 seconds
A = ½ × 15 × 4 = ½ × 60 = 30 in²
Find the area of a trapezoid with bases 9 in and 5 in, and height 7 in.
📘 Formula: A = ½ × (b₁ + b₂) × h
⏱️ Time: 2 minutes
A = ½ × (9 + 5) × 7 = ½ × 14 × 7 = ½ × 98 = 49 in²
Find the area of a rectangle that is 20 in long and 8 in wide.
📘 Formula: A = l × w
⏱️ Time: 1 minute 15 seconds
A = 20 × 8 = 160 in²
Find the area of a square with side 15 in.
📘 Formula: A = s × s
⏱️ Time: 1 minute 15 seconds
A = 15 × 15 = 225 in²
Find the total area of a parallelogram (base 6, height 4) and a triangle (base 6, height 3).
📘 Formulas:
Parallelogram: A = b × h → 6 × 4 = 24
Triangle: A = ½ × base × height → ½ × 6 × 3 = 9
⏱️ Time: 3 minutes 30 seconds
24 + 9 = 33 sq units
Find the area of a triangle with a base of 7.5 cm and a height of 8 cm.
📘 Formula: A = ½ × base × height
⏱️ Time: 2 minutes
A = ½ × 7.5 × 8 = ½ × 60 = 30 cm²
Find the area of a trapezoid with bases 14 cm and 10 cm, and height 8 cm.
📘 Formula: A = ½ × (b₁ + b₂) × h
⏱️ Time: 2 minutes 30 seconds
A = ½ × (14 + 10) × 8 = ½ × 24 × 8 = ½ × 192 = 96 cm²
Find the area of a rectangle that is 7.5 cm long and 3.2 cm wide.
📘 Formula: A = l × w
⏱️ Time: 1 minute 30 seconds
A = 7.5 × 3.2 = 24 cm²
Find the area of a square with side 7.5 cm.
📘 Formula: A = s × s
⏱️ Time: 1 minute 30 seconds
A = 7.5 × 7.5 = 56.25 cm²
Find the total area of a rectangle (8×5), a triangle (base 8, height 4), and a trapezoid (bases 4 & 6, height 3).
📘 Formulas:
Rectangle: A = l × w → 8 × 5 = 40
Triangle: A = ½ × base × height → ½ × 8 × 4 = 16
Trapezoid: A = ½ × (b₁ + b₂) × h → ½ × (4 + 6) × 3 = 15
⏱️ Time: 4 minutes
40 + 16 + 15 = 71 sq units