exam
Maths Puzzle
Numerical Ability
B4
Find the total surface area and volume of each solid object. Round to the three significant digit.
the object is a frustums of cone (frustums)
top radius:4.5'
height
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exam Other Question
Thomas can do a job in 4 hours. Julia can do the same job in 6 hours. How many hours will it take the two of them to do the job if they both work together?
simplify
-4/x^2-2x-15 minus 2/x-5