Answer:
C. 524.
Step-by-step explanation:
a=0.5(251+263)=257;
b=0.5*(263+271)=267;
a+b=257+267=524.
the answer is -5(x-6)(4x+3)
Answer:
Step-by-step explanation:
we know that
Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.
so
where
a, b and c are the length sides of triangle
s is the semi-perimeter of triangle
we have
<em>Find the semi-perimeter s
</em>
s=
Find the area of triangle
simplify
Ome thousand nine hundred seventy two seats remain.
Answer:
114.8
Step-by-step explanation:
The formula for a trapezoid is ((a+b/2)h
You need to plug everything in, ((12+15)/2)8.5= 114.8