exam Maths Puzzle Numerical Ability

Please help. The area A of a triangle with base b and height h is given by A=1/2bh. Find the area when b=20 m(meters) and h=22 m.

Thank you so much.

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exam Other Question

The height h in feet of an object after t seconds is given by the function below
How long will it take the object to hit the ground?

h= -(16 ft/sec^2)t^2 +(60ft/sec)t+34ft 2.) 12-x / 4x = 1 / 12
3.) 1 / x = 4 / x-2
4.) 3 / y+1 = y / 2
5.) 2a+5 / a-1 = 3a / a-1
6.) 2 / c(c-2) = 1 / c-2
7.) 3 / 2x-2 = 2x-1 / x