exam Maths Puzzle Numerical Ability

how do u Calculate (little 10) C (little 6)

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exam Other Question

A cone has a base diameter 30 inches and a slant height of 12. Find the surface area of the cone. Hat sizes are determined by measuring the circumference of one's head in either inches or centimeters. Use ratio and proportion to complete the following table.
Hat Size
7 1/2 r