exam Maths Puzzle Numerical Ability

Please help me find a solution to this problem I am having trouble understanding how to work it out. If the volume of a sphere is 500Pi/3m cubed what is the diameter of the sphere?

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exam Other Question
Consider the factoring process that has been illustrated below. Use three or more sentences to describe the process used to factor this polynomial.

3y3+4y2-12y-16
=y2(3y+4)-4(3 the design below grows each day as shown. if it continues to grow like this, how many tiles will there be in the design on the tenth day? on the fitieth day?

day 1
1 tile

day 2
4 tiles

day 3
9 tiles