Question

Think of a trapezoid with b1 and b2 as the length of the bases, h as the length of the altitude, and A as the area. Find the missing parts.




b1 b2 h A
5 3 12

i have to find b1

heres the pic and formula

Answer 1

use the area fromula

Answer 2

answer is 12

Answer 3

u r correct

Answer 4

\[A=1/2(h)(b1+b2)\rightarrow 12=(1/2)(3)(b1+5)\
\rightarrow12=1.5b1+7.5\
\rightarrow 4.5=1.5b1\
\rightarrow b1=4.5/1.5=3\]

Answer 5

sorry, b1=3

Answer 6

oh i was looking at the wrong bit - sorry

Answer 7

yep feldy