A cone has a base radius of 8cm and height 11cm. calculat...
A cone has a base radius of 8cm and height 11cm. calculate , correct to 2d.p, the curved surface area
341.98cm\(^2\)
276.57cm\(^2\)
201.14cm\(^2\)
477.71cm\(^2\)
Correct answer is A
Where l\(^2\) = h\(^2\) + r\(^2\)
l\(^2\) = 11\(^2\) + 8\(^2\)
l = √185
l = 13.60cm
The formula of CSA of Cone is πrl
\(\frac{22}{7}\) * 8 * 13.60
= 341.979 or 341.98 (2d.p)
If x is a real number which of the following is more illustrated on the number line? ...
The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase...
If (x - a) is a factor pf bx - ax + x2, find the other factor....
Simplify: \(\frac{4^{-\frac{1}{2}} \times 16^{\frac{3}{4}}}{4^{\frac{1}{2}}}\)...
The length of a piece of stick is 1.75 m. A boy measured it as 1.80 m. Find the percentage erro...
Simplify \(\frac{2.25}{0.015}\) leaving your answer in standard form...
Evaluate \((\frac{6}{0.32} \div \frac{2}{0.084})^{-1}\) correct to 1 decimal place....
The simple interest on ₦8550 for 3 years at x% per annum is ₦4890. Calculate the value of x to t...