A boy measured the length and breath of a rectangular law...
A boy measured the length and breath of a rectangular lawn as 59.6m and 40.3m respectively instead of 60m and 40m. What is the percentage error in his calculation of the perimeter of the lawn?
10%
1.4%
7%
0.2%
0.1%
Correct answer is E
Length = 59.6m Breath = 40.3m Perimeter = (59.6m + 40.3m) x 2 = 99.9 x 2 = 199.8m Actual measurement Perimeter = (60 + 40) x 2 = 100 x 2 = 200m Error = 200m - 199.8m = 0.2 Error =0.2/200 x 100/1 = 0.1%
Given that loga2 = 0.693 and loga3 = 1.097, find loga 13.5...
Find, correct to two decimal places, the mean of 9, 13, 16, 17, 19, 23, 24. ...
Solve for (x, y) in the equation 2x + y = 4: x^2 + xy = -12...
Use the graph of y = 3x2 + x - 7 above to answer the question What is the minimum value of y?...
Express 1 + 2 log103 in the form log109 ...
Calculate the gradient (slope) of the joining points (-1, 1) and (2, -2) ...