exam Maths Puzzle Numerical Ability

the length of a rectangle is three times its width
theperimeter of the rectangle is56 cm
a find the length and width of the rectangle

b find the area of the rectangle.

how do i do this please

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exam Other Question

find the axis of symmetry
y=x^2+7x+10

A)x=7
B)x=-7/2
C)x=7/2
D)x=-7: find the axis of symmetry please help me solve this problem: the distance of around a rectangle field is 2000 feet, the length is 800 feet what is the width? would it be 1200ft?