\(9\pi cm^2\)
\(15\pi cm^2\)
\(16\pi cm^2\)
\(20\pi cm^2\)
Correct answer is B
Curved surface area or a cone \(=\pi rl\)
from the information \(l^2 = 4^2 + 3^2 = 16+9\\
l = \sqrt{25} = 5; ∴ C.S.A\hspace{1mm} = \frac{22}{7}\times 3 \times 5\\
Since \frac{22}{7}=\pi ∴ C.S.A\hspace{1mm} =\hspace{1mm}15\pi\)
Find the area of the enclosed region, PXROY correct to the nearest whole number ...
Simplify \(\frac{0.026 \times 0.36}{0.69}\). Leave your answer in standard form ...
What is the value of 3 in the number 42.7531?...
Evaluate \(\int_{-4}^0(1 - 2x)dx\) ...