Answer:
area =length ×breath =10×6=60
Answer:
The rate of decrease is: 
Step-by-step explanation:
Given

---- We used minus because the rate is decreasing
Required
Rate of decrease when: 
The volume of the cube is:

Differentiate

Make dV the subject

Divide both sides by dt

Given that:
and 



<em>Hence, the rate of decrease is: 43.2mm^3/min</em>
Answer:
Step-by-step explanation:
Cost of 380 gram of sweets = (2.1/50) * 380 = $15.96
The only consistent right answer will be B.
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