Surface Area Rectangular prism

Front

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

Back

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

Front

If a rectangular prism has a length of 10 in, width of 5 in, and height of 4 in, what is its surface area?

Back

Surface Area = 2(10*5 + 10*4 + 5*4) = 2(50 + 40 + 20) = 2(110) = 220 in².

Front

What is the surface area of a rectangular prism with dimensions 3 ft (length), 4 ft (width), and 5 ft (height)?

Back

Surface Area = 2(3*4 + 3*5 + 4*5) = 2(12 + 15 + 20) = 2(47) = 94 ft².

Front

How do you round the surface area to the nearest square foot?

Back

Look at the decimal part: if it's 0.5 or higher, round up; if it's less than 0.5, round down.

Front

What is the surface area of a rectangular prism with dimensions 2 ft (length), 3 ft (width), and 6 ft (height)?

Back

Surface Area = 2(2*3 + 2*6 + 3*6) = 2(6 + 12 + 18) = 2(36) = 72 ft².

Front

If the surface area of a rectangular prism is 104 ft², what could be its possible dimensions?

Back

Possible dimensions could be 4 ft (length), 5 ft (width), and 6 ft (height).

Front

What is the significance of surface area in real-world applications?

Back

Surface area is important for determining the amount of material needed for packaging, painting, or coating an object.

Front

What is the surface area of a cube with a side length of 4 in?

Back

Surface Area = 6 * (side length)² = 6 * (4)² = 6 * 16 = 96 in².

Front

How does increasing the height of a rectangular prism affect its surface area?

Back

Increasing the height increases the surface area, as it adds more area to the top and bottom faces and the side faces.

Front

What is the surface area of a rectangular prism with dimensions 1 m (length), 2 m (width), and 3 m (height)?

Back

Surface Area = 2(1*2 + 1*3 + 2*3) = 2(2 + 3 + 6) = 2(11) = 22 m².