The side of a square is increased from 20cm to 21cm. Calc...
The side of a square is increased from 20cm to 21cm. Calculate the percentage increase in its area
2.5%
9.3%
10.0%
10.25%
Correct answer is D
old area = 202 = 400
new area = 212 = 441
% increase in area \(=\frac{41}{400}\times \frac{100}{1}\\
=10.25\%\)
The 6th term of a G.P is \(\frac{-2}{27}\) and its first term is 18. What is the common ratio?...
Evaluate 1 - (\(\frac{1}{5}\) x \(\frac{2}{3}\)) + ( 5 + \(\frac{2}{3}\))...
Marks 2 3 4 5 6 7 8 No. of students 3 1 5 2 4 2 3 from the table above, if the pass mark is...
Determine the value of x for which (x\(^2\) - 1) > 0? ...
What are the values of y which satisfy the equation \(9^{y} - 4 \times 3^{y} + 3 = 0\) ?...
Evaluate \(\frac{12.02 \times 20.06}{26.04 \times 60.06}\), correct to three significant figures....
The price of a shoe was decreased by 22%. If the new price is $27.3. what is the original price. ...