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What is a measure of the number of square units needed to cover the outside of a figure or solid expressed in units squared?
surface area
What is the surface area of a sphere with a radius of 11 units?
Surface area of a sphere = 4*pi*radius2 Surface area = 4*pi*112 = 1520.530844 square units.
Why are square units used when working with a three dimensional figure?
Because the surface areas of 3-d figures are two-dimensional and their measures require square units.Because the surface areas of 3-d figures are two-dimensional and their measures require square units.Because the surface areas of 3-d figures are two-dimensional and their measures require square units.Because the surface areas of 3-d figures are two-dimensional and their measures require square units.
What is the surface area of a rectangle?
Surface areas are measured in square units, such as square inches, square feet, square meters, etc. To determine the surface area, first ensure you have the length and width of the rectangle expressed in the same units (both in inches, both in feet, etc.), then multiply the length by the width: 2 feet x 3 feet = 6 square feet
What is the surface area of circular disk?
If r is the radius of the disc, then pi*r2 square units.
