book Maths Puzzle Numerical Ability

Thank you for your help! If two planes leave an airport at 1:00pm, how far in distance will they be at 3:00pm if one plane drove directly North 150mph and the other drove directly west 200mph?

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book Other Question

"Write the first four terms of the geometric sequence with the first term (a sub n = 16) and common ration r= -1/2. Clark's spaceship follows a circular orbit around Earth before landing. It has an equation of : x^2 + y^2 = 64.
An asteroid follows elliptical orbit about Earth.
It has an equati