exam Maths Puzzle Numerical Ability

Find the lateral surface if the figure has a perimeter of 4cm x 4cm x 3cm x 1 cm and the right solid base is 6cm high.

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Please help with the following problem: Solve for z in terms of y: z-zsiny=1. i started by subtracting the one to the other side and then dividing by z getting (z-1)/z=siny. now i have no idea what to do or if what i did was right. please help! what is the prime factorrization of 56