Surface Area of Rectangular Prisms

Front

What is the formula for the surface area of a rectangular prism?

Back

Surface Area = 2(lw + lh + wh), where l = length, w = width, h = height.

Front

What does surface area represent in real-world applications?

Back

Surface area represents the total area that the surface of an object occupies, important for tasks like painting, wrapping, or covering.

Front

If a rectangular prism has dimensions 5 cm, 4 cm, and 3 cm, what is its surface area?

Back

Surface Area = 2(5*4 + 5*3 + 4*3) = 2(20 + 15 + 12) = 2(47) = 94 cm².

Front

What is the surface area of a rectangular prism with dimensions 2 m, 3 m, and 4 m?

Back

Surface Area = 2(2*3 + 2*4 + 3*4) = 2(6 + 8 + 12) = 2(26) = 52 m².

Front

How do you find the surface area of a box?

Back

Calculate the area of each face and sum them up, or use the formula: Surface Area = 2(lw + lh + wh).

Front

What is the surface area of a rectangular prism with a length of 10 in, width of 5 in, and height of 2 in?

Back

Surface Area = 2(10*5 + 10*2 + 5*2) = 2(50 + 20 + 10) = 2(80) = 160 in².

Front

Why is it important to know the surface area of an object?

Back

Knowing the surface area helps in determining the amount of material needed for covering, painting, or wrapping.

Front

What is the surface area of a rectangular prism with dimensions 6 in, 3 in, and 5 in?

Back

Surface Area = 126 in².

Front

If a gift box is 8 cm long, 4 cm wide, and 3 cm high, what is the surface area?

Back

Surface Area = 2(8*4 + 8*3 + 4*3) = 2(32 + 24 + 12) = 2(68) = 136 cm².

Front

What is the surface area of a rectangular prism with dimensions 12 m, 10 m, and 8 m?

Back

Surface Area = 2(12*10 + 12*8 + 10*8) = 2(120 + 96 + 80) = 2(296) = 592 m².