exam Maths Puzzle Numerical Ability

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Page 204
Number 2

Four less than nine times a number is one hundred twenty two find the original number.

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exam Other Question

The volume of a cylinder is 49pi. Find the radius and height of the cylinder. The radius is 3 times the height. How do i find the radius and height of the cylinder using pi times r^2 times height (Use 10 steps)
Given: a and b intersect
Angle 1 is congruent to angle 2

Prove: a is perpendicular to b

Pls. use the two column proof...
The statement and the reason for th