Geometry and Measures

What is the area of a rectangle with length 6 cm and width 4 cm?

• A10 cm²
• B20 cm²
• C24 cm²✓
• D48 cm²

Answer: Area of rectangle = length × width = 6 × 4 = 24 cm².

What is the perimeter of a square with side 5 cm?

• A10 cm
• B15 cm
• C20 cm✓
• D25 cm

Answer: Perimeter of square = 4 × side = 4 × 5 = 20 cm.

What is the volume of a cube with side 3 cm?

• A9 cm³
• B27 cm³✓
• C36 cm³
• D81 cm³

Answer: Volume of cube = side³ = 3³ = 27 cm³.

What is the area of a triangle with base 8 cm and height 5 cm?

• A20 cm²✓
• B40 cm²
• C13 cm²
• D80 cm²

Answer: Area of triangle = (base × height) ÷ 2 = (8 × 5) ÷ 2 = 20 cm².

How many millimetres are in 5 centimetres?

• A0.5 mm
• B50 mm✓
• C500 mm
• D5000 mm

Answer: 1 cm = 10 mm. So 5 cm = 5 × 10 = 50 mm.

How many metres are in 3.5 kilometres?

• A350 m
• B3500 m✓
• C3.5 m
• D35,000 m

Answer: 1 km = 1000 m. So 3.5 km = 3.5 × 1000 = 3500 m.

What is the volume of a cuboid with length 6 cm, width 4 cm, and height 3 cm?

• A13 cm³
• B36 cm³
• C72 cm³✓
• D144 cm³

Answer: Volume = length × width × height = 6 × 4 × 3 = 72 cm³.

What is the perimeter of a rectangle with length 10 cm and width 6 cm?

• A16 cm
• B32 cm✓
• C60 cm
• D4 cm

Answer: Perimeter = 2(length + width) = 2(10 + 6) = 2 × 16 = 32 cm.

How many grams are in 2.5 kilograms?

• A0.25 g
• B250 g
• C2500 g✓
• D25,000 g

Answer: 1 kg = 1000 g. So 2.5 kg = 2.5 × 1000 = 2500 g.

What is the area of a circle with radius 3 cm? (Use π ≈ 3.14)

• A9.42 cm²
• B18.84 cm²
• C28.26 cm²✓
• D113.04 cm²

Answer: Area = πr² = 3.14 × 3² = 3.14 × 9 = 28.26 cm².

What is the circumference of a circle with radius 5 cm? (Use π ≈ 3.14)

• A15.7 cm
• B31.4 cm✓
• C78.5 cm
• D157 cm

Answer: Circumference = 2πr = 2 × 3.14 × 5 = 31.4 cm.

What is the surface area of a cube with side 2 cm?

• A4 cm²
• B8 cm²
• C24 cm²✓
• D64 cm²

Answer: A cube has 6 faces. Area of each face = 2² = 4 cm². Total = 6 × 4 = 24 cm².