exam Maths Puzzle Numerical Ability

base of a rectangle=10 m and the height is 7m.What is the perimeter dilated to half the size?
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exam Other Question

If sides a and b are known, angle B equals? Now my book says that if we know a and b that A= Tan-1 a/b and also says that B = 90 - A. My problem is 90 - A is not a answer to this The function H described by H(x) = 2.75x + 71.48cm can be used to predict the height, in centimeters, of a woman whose humerus is x cm long. Predict the height of a woman whose humerus is 33 cm long.
Height =_____cm.