41. The value of $$\sqrt {0.000441} $$ is = ?
42. $${1.5^2} \times \sqrt {0.0225} = ?$$
43. The value of $$\sqrt {0.01} {\text{ + }}$$ $$\sqrt {0.81} {\text{ + }}$$ $$\sqrt {1.21} {\text{ + }}$$ $$\sqrt {0.0009} $$ is = ?
44. $$\sqrt {1.5625} = ?$$
45. Given that $$\sqrt {13} = 3.605$$ and $$\sqrt {130} = 11.40{\text{,}}$$ find the value of $$\sqrt {1.30} $$ $$ + $$ $$\sqrt {1300} $$ $$ + $$ $$\sqrt {0.0130} $$ = ?
46. If $$\frac{{52}}{x} = \sqrt {\frac{{169}}{{289}}} {\text{,}}$$ the value of x is = ?
47. For what value of * the statement $$\left( {\frac{*}{{15}}} \right)$$ $$\left( {\frac{*}{{135}}} \right)$$ = 1 is true ?
48. Which number should replace both the question marks in the following equation ?
$$\frac{?}{{1776}} = \frac{{111}}{?}$$
$$\frac{?}{{1776}} = \frac{{111}}{?}$$
49. Which number can replace both the question marks in the equation ?
$$\frac{{4\frac{1}{2}}}{?} = \frac{?}{{32}}$$
$$\frac{{4\frac{1}{2}}}{?} = \frac{?}{{32}}$$
50. What should come in place of both the question marks in the equation ?
$$\frac{?}{{\sqrt {128} }} = \frac{{\sqrt {162} }}{?}$$
$$\frac{?}{{\sqrt {128} }} = \frac{{\sqrt {162} }}{?}$$
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