Answer:
area of square=l²
25sq.cm²=l²
l=5sq.cm
area of trapezium =(1/2)(a+b)h
a=5,b=(12+5)=17,h=5
area of trapezium=(1/2)(22)(5)
area=55cm²
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Answer:
b. 300x1 + 125x2 < = 4,000
Step-by-step explanation:
Maximum of 4,000 hours
This means that the the total amount of labor has to be of at most 4,000, that is:

300 ping-pong balls (x1) or 125 wiffle balls (x2) can be produced per hour of labor
The total amount of labor is:

Uniting the two equations:


And thus the correct answer is given by option b.