30 ft.
20+20=40 These are the short sides of the flower garden. If the total is 100 ft, you need to subtract 40 ft.
100-40=60. This is the total of the other two sides of the rectangle. Hope this helps.
Answer:
64
Step-by-step explanation:
Answer:
14a^2
Step-by-step explanation:
3a^2+4a^2+7a^2
Combine like terms
Factor out a^2
a^2(3+4+7)
a^2(14)
14a^2
