SOLUTION: A trapezoid is a quadrilateral with only one pair of parallel sides called the bases of the trapezoid. The formula for the area of a trapezoid is A= h/2(b^1+b^2) where h repres

Algebra ->  Real-numbers -> SOLUTION: A trapezoid is a quadrilateral with only one pair of parallel sides called the bases of the trapezoid. The formula for the area of a trapezoid is A= h/2(b^1+b^2) where h repres      Log On


   

Question 174692: A trapezoid is a quadrilateral with only one pair of parallel sides called the
bases of the trapezoid. The formula for the area of a trapezoid is A=
h/2(b^1+b^2) where h represents the measure of the altitude to the bases, and
b^1 and b^2 represent the measures of the bases. Find the area of a trapezoid if
h= 5.25 cm, b^1 = 12.75 cm, and b^2 = 9.50 cm. Express your answer to the number
of significant digits determined by the given data.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
A=%28h%2F2%29%28b%5B1%5D%2Bb%5B2%5D%29 Start with the given area of a trapezoid formula.


A=%285.25%2F2%29%2812.75%2B9.50%29 Plug in h=5.25, b%5B1%5D=12.75, and b%5B2%5D=9.50


A=%282.625%29%2812.75%2B9.50%29 Divide


A=%282.625%29%2822.25%29 Add


A=58.40625 Multiply


Since the least number of significant digits is 3, this means our answer will have 3 significant digits. So the answer is


A=58.4


which means that the area of the trapezoid is roughly 58.4 square centimeters.