The vector sum of (7 units down) + (3 units up) is (4 units down).
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It means that for every three units of distance that you move to the right you move one unit up (equivalently, 3 left and 1 down).
A sphere with a radius of 3 units has a volume of 113.1 cubic units.
5 x 3 = 15 sq units
An object which is 3 units by 4 units by 10 units has six faces, three pairs of 2. 2 of them are 3 x 4 2 of them are 3 x 10 2 of them are 4 x 10 This equals 2 @ 12 square untis 2 @ 30 square units 2 @ 40 square units which adds up to 12+12+30+30+40+40 = 164 square units of surface area
4 units x 3 units x 2 units