Construction mathematics Questions _Areas

A circular pipe has a radius of 7 cm. What is its area?

• 154 cm²

• 44 cm²

• 314 cm²

• 100 cm²

If the diameter of a circular column base is 16 meters, what is the circumference?

• 50.24 m

• 40.12 m

• 25.12 m

• 80.48 m

A circular window has a radius of 1.5 meters. What is its perimeter?

• 9.42 m

• 6.28 m

• 3.14 m

• 12.56 m

A square tile has a side length of 12 cm. What is its area?

• 144 cm²

• 120 cm²

• 132 cm²

• 150 cm²

A construction site has a square foundation with a perimeter of 64 meters. What is the length of one side?

• 16 m

• 8 m

• 12 m

• 10 m

A square floor of a building is covered with tiles. Each tile is 4 cm on each side. How many tiles are needed to cover an area of 400 cm²?

• 25 tiles

• 100 tiles

• 50 tiles

• 75 tiles

A triangular roof section has a base of 10 m and a height of 6 m. What is the area?

• 60 m²

• 30 m²

• 20 m²

• 50 m²

A right-angled triangle has legs of 9 m and 12 m. What is the hypotenuse?

• 15 m

• 13 m

• 17 m

• 10 m

The perimeter of an equilateral triangle is 21 cm. What is the length of one side?

• 5 cm

• 6 cm

• 7 cm

• 8 cm

A rectangular construction site measures 50 m by 30 m. What is its area?

• 1200 m²

• 1500 m²

• 1400 m²

• 1300 m²