Let’s do a first. So to start, we need to substitute 10 into the equation, so: a = 5 x (10 squared) / 2 Which can be simplified to a = 5 x 100 / 2 a = 500 / 2 a = 250
Now onto b. Again, we need to substitute 10 into the equation, so: b = (2 x (10 squared))(10 - 5) / 10 x 10 Which can be simplified to b = (2 x 100)(10 - 5) / 10 x 10 b = 200(10 - 5) / 10 x 10 b = 200(5) / 10 x 10 b = 1000 / 10 x 10 b = 1000 / 100 b = 10
