Search.....

8th Class Mathematics Squares and Square Roots Question Bank Squares and Square Roots

Find the value of P, Q, R and S.

(i) Square root of 1354.24 is\[\underline{\text{   P   }}\].

(ii) Square root of 151.29 is \[\underline{\text{   Q   }}\].

(iii) Square root of 7208.01 is \[\underline{\text{   R   }}\].

(iv) Square root of 1789.29 is\[\underline{\text{   S   }}\].

A)

P Q R S

38.2 12.9 83.4 41.3



B)

P Q R S

36.8 11.3 86.9 41.7



C)

P Q R S

35.4 13.3 85.1 42.9



D)

P Q R S

36.8 12.3 84.9 42.3

Correct Answer: D

Solution :

(i)

	36.8
3	\[\begin{align} & \overline{13}\overline{54}.\overline{24} \\ & -9 \\ \end{align}\]
66	\[\begin{align} & \text{ }454 \\ & -396 \\ \end{align}\]
728	\[\begin{align} & \text{ }5824 \\ & -5824 \\ \end{align}\]
	0

\[\therefore \] Square root of 1354.24 = 36.8 (ii)

	12.3
1	\[\begin{align} & \text{ }\overline{1}\text{ }\overline{51}.\overline{29} \\ & -1 \\ \end{align}\]
22	\[\begin{align} & \text{ }51 \\ & -44 \\ \end{align}\]
243	\[\begin{align} & \text{ }729 \\ & -729 \\ \end{align}\]
	0

\[\therefore \] Square root of 151.29 = 12.3 (iii)

	84.9
8	\[\begin{align} & \text{ }\overline{72}\text{ }\overline{08}.\overline{01} \\ & -64 \\ \end{align}\]
164	\[\begin{align} & \text{ }808 \\ & -656 \\ \end{align}\]
1689	\[\begin{align} & \text{ }15201 \\ & -15201 \\ \end{align}\]
	0

\[\therefore \] Square root of 7208,01 = 84.9 (iv)

	42.3
4	\[\begin{align} & \text{ }\overline{17}\text{ }\overline{89}.\overline{29} \\ & -16 \\ \end{align}\]
82	\[\begin{align} & \text{ }189 \\ & -164 \\ \end{align}\]
843	\[\begin{align} & \text{ }2529 \\ & -2529 \\ \end{align}\]
	0

\[\therefore \] Square root of \[1789.29=42.3\]

You need to login to perform this action.
You will be redirected in 3 sec spinner