24cm
28cm
36cm
32cm
Correct answer is C
L = \(\frac{\theta}{360}\) x 2\(\pi\)r
16\(\pi\) = \(\frac{80}{360}\) x 2\(\pi\)r
\(\frac{16\pi \times 360}{80 \times 2\pi}\) = r
r = 36cm
Evaluate \(\int\limits_0^\frac{\pi}{2}\) sin xdx
2
-1
1
-2
Correct answer is C
\(\int\limits_0^\frac{\pi}{2}\) sin xdx = -cosx|\(\frac{\pi}{2}\)
= -(cos\(\frac{\pi}{2}\) - cos0) = -(0-1) = 1
6\(\pi\)cm
2\(\pi\)cm
3\(\pi\)cm
9\(\pi\)cm
Correct answer is B
Length or arc = \(\frac{\theta}{360}\) x 2\(\pi\)r
= \(\frac{30}{360}\) x 2 x \(\frac{22}{7}\) x 12
= \(\frac{1}{12}\) x 2 x \(\pi\) x 2 = 2\(\pi\)cm
14.09
14.1
14.12
14.11
Correct answer is D
\(\frac{0.8 \times 0.43 \times 0.031}{0.05 \times 0.72 \times 0.021}\) x \(\frac{10}{10}\) = 14.11
Find \(\frac{dy}{dx}\), if y = \(\frac{2}{3}\) x\(^3\) - \(\frac{4}{x}\)
3x2 - \(\frac{4}{x}\)
2x2 +\(\frac{4}{x^2}\)
3x2 + \(\frac{4}{x^2}\)
2x2 - \(\frac{4}{x}\)
Correct answer is B
No explanation has been provided for this answer.