SOLUTION: Given the formula A = 1/2 (a+b)h, find: 1. a if A = 360, b - 25, h = 16 2. b if A = 252, a = 18, h =12”

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Question 1189582: Given the formula A = 1/2 (a+b)h, find:
1. a if A = 360, b - 25, h = 16
2. b if A = 252, a = 18, h =12”
Answer by ikleyn(52781) About Me  (Show Source):
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Given the formula A = 1/2 (a+b)h, find:
1. a if A = 360, b - 25, h = 16
2. b if A = 252, a = 18, h =12
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(1)  From  A = %281%2F2%29%2A%28a%2Bb%29%2Ah, you have


     %282A%2Fh%29 = a + b,

     a = %282A%29%2Fh-b.


     Substitute given values A, h and b into the formula and calculate "a".




(1)  Similarly, from  A = %281%2F2%29%2A%28a%2Bb%29%2Ah, you have

     %282A%2Fh%29 = a + b,

     b = %282A%29%2Fh-a.


     Substitute given values A, h and "a" into the formula and calculate "b".

Happy calculations (!)