Given that (in picture)... Find the values of a and b

Please help- confused on rationalising denominator but not sure

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Work Shown:

Multiply top and bottom by to rationalize the denominator

We end up with something in the form where a = -3 and b = 5

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

3/6 chance

step-by-step explanation:

half of the nubers are odd numbers (1,3,5) which in that case if you would be told to simplify it would be 1/2