A) 5/100 x 420 = 21
21 x 12 x 3= 756
420 x 12 x 3 = 15,120
15,120+756= 15,876
b) 4/100 x 420= $16.8
Answer:
Area of rectangle = l × b = 4988m².
B = 58m.
L = 4988/58m.
Thus length becomes 86m.
pls give brainliest for the answer
The percentage error is 11.1%
<h3>What is percentage error?</h3>
Percentage error is simply the difference between the exact and the estimated values as a percentage
The given parameters are:
The percentage error is then calculated as:

Evaluate the difference

So, we have:


Hence, the percentage error is 11.1%
Read more about percentage errors at:
brainly.com/question/5493941
Answer: 12.50625
Step-by-step explanation:
just add
12.000.00+.05%