exam Maths Puzzle Numerical Ability

please help me. scientific notation: (5.6 x 10^4) (3.0 x 10^-3)
thank you

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exam Other Question

Consider the following trapezoid with 2 sides 2s+1 and 3s and height h.
If the area of the trapezoid is given A=1/2h(3s+(2s+1), solve for s if h=3 cm and A=15cm squared. Lynn and Laws knew that the confection should be exactly 8% sugar. It was to be made using one component that was 5% sugar and another that was 20% sugar. How much of each should they use to get 800 ml of the confection?