If the height and width are in cm, the area is shown in. W,\quad\frac\pi2-\frac l2,\quad\frac\pi2-\frac l2 To work out the area of a square or rectangle, multiply its height by its width. the total surface area of the box is 2548cm2. Assume we are working on a sphere of radius $1$, or consider the lengths in radians and the areas in steradians.Įxtend the sides of length $l$ until they meet. The length breadth and height of a rectangle box are in the ratio of 4:3:2.
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