book Maths Puzzle Numerical Ability

if they draw a parabola and ask to find its quadratic equation. how do u do that?

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book Other Question

1.find the volume of a rectangular solid 15.7 cm by 2 cm by 3cm

2. find the volume of a cylinder whose base has a diameter of 14ft & whose height is 23 ft

3. volume of a square pyramid whose side is 12 cm & whose height is 12cm
Please help. Translate into a quadratic equation:
The square of a positive integer minus half of its consecutive integer is equal to 162. Find the integers