exam Maths Puzzle Numerical Ability

how do u solve this porblem?

(r+s)^2+(r-s)^2

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exam Other Question

what is the area of a 11 by 3x rectange Let p represent a true statement, while q and r represent false statements. Fing the truth value of the compound statement.

a) (p^~q) ^ r

b) ~(q v ~r)