If you draw a diagram of a 3D cuboid and label the sides, it may make this a little easier to understand:
There are 6 surfaces in total:
2 are 8 x 5
2 are 8 x 4
2 are 4 x 5
Total surface area is (2x8x5) + (2x8x4) + (2x4x5) = 80 + 64 + 40 = 184
Answer is 184 square inches
Taking the four sides as each having 6 inch length, and the sum of the widths and heights of the sides being 14 inches, the area of the sides is 84 square inches (6 x 14), and the area of the ends is 24 square inches (2 x 3 x 4), for a total surface area of 108 square inches.
Surface area = 4*pi*22 = 50.265 square inches to 3 d.p.
The sum of all the areas of the surfaces of a solid figure. for example, a cube with dimensions 2 inches x 2 inches x 2 inches has a surface area of 24 square inches (4 square inches + 4 square inches + 4 square inches + 4 square inches + 4 square inches + 4 square inches...6 sides with an area of 4 square inches)
The surface area of a cylinder is given by the formula 2πr(r+h), where r is the radius and h is the height. In this case, the radius is half the diameter, so it is 4 inches. Thus, the surface area of this cylinder is 2π(4)(4+5) = 2π(4)(9) = 2π(36) ≈ 226.195 square inches.
The formula for the surface area of a sphere is 4 (pi) r2For a radius of 5 in, the surface area is4 (3.1416) (5)2 = 4 (3.1416)(25) = about 314.16 square inches
Taking the four sides as each having 6 inch length, and the sum of the widths and heights of the sides being 14 inches, the area of the sides is 84 square inches (6 x 14), and the area of the ends is 24 square inches (2 x 3 x 4), for a total surface area of 108 square inches.
Surface area = 4*pi*22 = 50.265 square inches to 3 d.p.
The sum of all the areas of the surfaces of a solid figure. for example, a cube with dimensions 2 inches x 2 inches x 2 inches has a surface area of 24 square inches (4 square inches + 4 square inches + 4 square inches + 4 square inches + 4 square inches + 4 square inches...6 sides with an area of 4 square inches)
32 divided by 8 is 4 inches
A regular octahedron has 8 faces. If the total surface area is 32 square inches then each face have a surface area equal to one eighth of this. 32/8 = 4 so the surface area of each face is 4 square inches
The total surface area of a sphere when the radius is 4 equals 201.1 units2
If the area of a cube surface is 96 square inches, then each of six sides has an area of 16 square inches and the length of each side is 4 inches. The volume is 4 x 4 x 4 = 64 cubic inches
127.5
Each face of the cube would have an area of 4*4 = 16 sq inches. A cube has 6 faces so the total surface area = 6*16 = 96 sq inches.
The surface area of a cylinder is given by the formula 2πr(r+h), where r is the radius and h is the height. In this case, the radius is half the diameter, so it is 4 inches. Thus, the surface area of this cylinder is 2π(4)(4+5) = 2π(4)(9) = 2π(36) ≈ 226.195 square inches.
Surface area: 4*pi*62 = 144*pi square inches Volume: 4/3*pi*63 = 288*pi cubic inches
The formula for the surface area of a sphere is 4 (pi) r2For a radius of 5 in, the surface area is4 (3.1416) (5)2 = 4 (3.1416)(25) = about 314.16 square inches