For Problems 116, use the formula to solve for the given variable. (Objective 1)
Solve the formula

98  104  49  162  16½  38 ½  square feet 

14  8  7  9  3  11  feet 

8  12  4  16  4  5  feet 

?  ?  ?  ?  ?  ?  feet 
A = area, h= height, b_{1} = one base, b_{2}_{} = other base
To Solve:
To Solve
98  104  49  162  16½  38½  square feet  
14  8  7  9  3  11  feet  
8  12  4  16  4  5  feet  
?  ?  ?  ?  ?  ?  feet 
Approach:
Formulas are the rules represented in symbolic form as equations.
Formulas are used in two ways.
1) Formula is used to solve for a specific variable when numeric values are given for remaining variables. This is similar to evaluating an algebraic expression.
2) Sometimes we need to change the equation form in order to solve one variable in terms of another variable.
Ex: If
Calculation:
To solve for
Formula is
In order to solve, change the formula to variable
Substitute the given values in the above formula.
By substituting
Cancel out common factors.
Substitute
Cancel out common factors.
Substitute
Cancel out common factors.
Substitute
Cancel out common factors
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