Answer:
The chocolate bar contains 29.2 grams of cocoa.
Step-by-step explanation:
Given that Lucy’s chocolate bar is 54% cocoa and the weight of the chocolate bar is 54 grams.
Hence, the amount of cocoa in the chocolate bar is given by
54% of 54 grams
54% percentage means 54/100 = 0.54
Hence, the amount of cocoa in the chocolate bar is

When rounded to the nearest tenth, 29.16 should be equal to 29.2
Hence, the chocolate bar contains 29.2 grams of cocoa.
The value of the deal should be $40,000.
remember that 5% as a decimal is .05.Let x = value of deal
The equation would be .05x = $2000
Divide both sides by 0.05.
x=40,000
In this question,it is given that,
The volume v of a pyramid with a square base with side length s and height h is

And we have to solve for s.
First we will get rid of 3 by multiplying both sides by 3, that is

And in the next part it is given that , volume is 7700 cubic meters and height is 148 meters .
Substituting these values, we will get