Answer:
11. a)50 12. a)40
Step-by-step explanation:
sum of all three angles of trinagle=180
so
111.
80+50+x=180
130+x=180
x=180-130
x=50
12.
60+90+x=180
150+x=180
x=190-150
x=40
Answer:
wish i could help have a gret day
Step-by-step explanation:
11.70 gallons....................................
Answer:
the perimeter is of 148 m
Step-by-step explanation:
the perimeter is the sum of all sides so an square has all sides equal so we have

and the area is

so we find x

and now the perimeter

You should use youtube and learn how to do it, that's how i learned. you'll get frustrated but just pay attention.