7? An isosceles triangle has two indentical sides(you can remember that by saying you have TWO eyes hint EYEsosceles) but I’m guessing the bottom is 3 and the two sides are 7?
Number 1 would be the correct answer :)
Answer:
3.6 cubic feet
Step-by-step explanation:
The volume of the box is simply the product of the 3 sides. so 
Step-by-step explanation:
=2b+9
=2×3+9
=6+9
=15
hope it helps.