Surface Area of Rectangular Prisms Practice Answers
1. A rectangular prism has a length of 6 cm, a width of 4 cm, and a height of 5 cm. Calculate the surface area.
Surface area = 2lw + 2lh + 2wh
Surface area = 2(6)(4) + 2(6)(5) + 2(4)(5)
Surface area = 48 + 60 + 40
Surface area = 148 cm^2
2. A rectangular prism has a length of 8 cm, a width of 3 cm, and a height of 10 cm. Calculate the surface area.
Surface area = 2lw + 2lh + 2wh
Surface area = 2(8)(3) + 2(8)(10) + 2(3)(10)
Surface area = 48 + 160 + 60
Surface area = 268 cm^2
3. A rectangular prism has a length of 12 cm, a width of 7 cm, and a height of 4 cm. Calculate the surface area.
Surface area = 2lw + 2lh + 2wh
Surface area = 2(12)(7) + 2(12)(4) + 2(7)(4)
Surface area = 168 + 96 + 56
Surface area = 320 cm^2
4. A rectangular prism has a length of 5 cm, a width of 6 cm, and a height of 9 cm. Calculate the surface area.
Surface area = 2lw + 2lh + 2wh
Surface area = 2(5)(6) + 2(5)(9) + 2(6)(9)
Surface area = 60 + 90 + 108
Surface area = 258 cm^2