Area of a trapezoid

Question

A= 1/2h (b1+b2)

The b1 and b2 have number is underneath the b... like an upside down exponent

Answer 1

Those 1 and 2 things are called subscripts--they are used to identify base # 1 and base # 2, respectively.

 

In words, the formula for area of a trapezoid is AREA IS THE HEIGHT TIMES THE AVERAGE BASE.

(Because half of the sum b₁+b₂ is the average of the two bases.) You will find this useful to memorize. Tell a friend!

You could even tell the teacher!