exam Maths Puzzle Numerical Ability

-(2y-6)+10

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exam Other Question

a poster is 25 cm taller than it is wide. it is mounted on a piece of cardboard so that there is a 5 cm border on all sides. if the area of the border alone is 1350 cm^2, what are the dimensions of the poster? Given a sphere of known radius,R. The surface area is 4*pi*R^2.
What is the surface area of a circle of radius r drawn on that sphere? I know that the answer is more than pi*r^2.

Thank you,
Charles Palm