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Question 3
Rearrange the following formulae to make the letter shown in the square brackets the subject.
| (a) | \( A = \pi r^2\) | \( [r]\) | (b) | \( E = mc^2\) | \( [c]\) | (c) | \( V = \frac{1}{3}\pi r^2h\) | \( [r]\) |
| (d) | \( v^2 = u^2 + 2as\) | \( [u]\) | (e) | \( h^2 = a^2 + b^2\) | \( [b]\) | (f) | \( T = 2\pi \sqrt{\frac{L}{g}}\) | \( [L]\) |
| (g) | \( E = \frac{1}{2}mv^2\) | \( [v]\) | (h) | \( s = ut + \frac{1}{2}at^2\) | \( [a]\) | (i) | \( T = 2\pi \sqrt{\frac{L}{g}}\) | \( [g]\) |
| (j) | \( V = \frac{4}{3}\pi r^3\) | \( [r]\) | (k) | \( x^2 + y^2 = r^2\) | \( [x]\) | (l) | \( y = 5\sqrt{2 - x^2}\) | \( [x]\) |