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Maths Puzzle
Numerical Ability
Why must units of an expression be the same in order to be combined?
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My problem is:
The base of a right pyramid is a regular hexagon with sides of length 12 m. The altitude of the pyramid is 9 m. Find the total surface area of the pyramid.
Thanks for your help
Combine like terms.
5w + 5x - 9w
A) w + x B) 10w - 9x C) -4w + 5x D) wx