8.74cm
38.2cm
61.2cm
76.4cm
Correct answer is B
Length of arc = \(\frac{\theta}{360} \times 2\pi r\)
\(50 = \frac{75}{360} \times 2 \times \frac{22}{7} \times r\)
\(r = \frac{50 \times 360 \times 7}{75 \times 2 \times 22}\)
\(r = \frac{420}{11}\)
= 38.18 cm \(\approxeq\) 38.2 cm (3 sig. figs)
Which of these angles can be constructed using ruler and a pair of compasses only?...
Simplify \(\frac{x - 4}{4} - \frac{x - 3}{6}\) ...
If 3214 is divided by 234 and leaves a remainder r, what is the value of r?...
Solve the equations: 4x -y = 11; 5x + 2y = 4. ...
Find the x and z intercepts of the graph of 3x - z \(\leq\) 9...
If 2n = y, Find 2\(^{(2 + \frac{n}{3})}\)...
If \(\frac {3 - \sqrt 3}{2 + \sqrt 3} = a + b\sqrt 3\), what are the values a and b?...