Download App

Square and Square Roots — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSSquare and Square Roots4 Marks
Question
Find the square root of the following decimal numbers.
$2.56$
✓

Answer

The square root of $2.56$ can be calculated as follows.
$\begin{array}{c|c} & 16 \\ \hline1 & {\overline{2.}\\{-1}} {\overline{56}}\\\hline26&{156\\156}\\\hline&0\end{array}$
$\therefore\sqrt{2.56}=1.6$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Case study (4 Marks)" from Square and Square Roots→Square and Square Roots — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

For each of the following numbers, find the smallest whole number by which it should
be divided so as to get a perfect square. Also find the square root of the square
number so obtained.$396$
→
The graph given below, shows the marks obtained out of 10 by Sonia in two different tests. Study the graph and answer the questions that follow.
Image
(i) What information is represented by the axes?
(ii) In which subject did she score the highest in test I?
(iii) In which subject did she score the least in test II?
(iv) In which subjects did she score the same marks in both the tests?
→
Two labourers, Sohan and Mohan, were employed to dig a trench. Sohan alone can dig it in 10 days while Mohan alone can dig it in 15 days. In order to complete the job quickly both were hired together. They worked together, dug the trench and were paid 4000 altogether for the Job. Mohan insisted that the money be divided equally between both of them as they had worked for the same time but Sohan said that he should get a bigger share, as the quantum of work done by him was greater.

(1) How many days did both of them together take to dig the trench?
(a) 5 days (b) 6 days (c) $7 \frac{1}{2}$ days (d) 8 days

(2) What should be the fair share of Mohan and Sohan respectively in the total amount received for the job?
(a) ₹1500, ₹2500 (b) ₹2000, ₹2000 (c) ₹1600, ₹2400 (d) ₹1750, ₹2250

(3) What fraction of the trench was dug by Mohan?
(a) $\frac{1}{2}$ (b) $\frac{2}{3}$ (c) $\frac{1}{3}$ (d) $\frac{2}{5}$

(4) Had Sohan and Mohan worked on the job on alternate days,how much time would they have taken to dig the trench?
(a) 8 days (b) 10 days (c) 12 days (d) 15 days
→
Find five rational numbers between$\frac{1}{4}\ \text{and}\ \frac{1}{2}$
→
Find the square root of the following decimal numbers.$7.29$
→
Find the square root of each of the following numbers by Division method.$3481$
→
Find the least number which must be subtracted from each of the following numbers so as to get a perfect square. Also find the square root of the perfect square so obtained.
$402$
→
Examine the following case study carefully and answer the questions that follow.
ABC Constructions is a private building company which builds and sells flats. They undertake a Project X wherein they are building 90 flats each costing ₹ 6,00,000. At the planning stage a preliminary analysis of the price breakup was carried out and a pie chart as shown below was drawn to depict the same.
Image
1. The amount spent on timber for each flat is
(a) ₹ 30,000 $\quad$ (b) ₹ 36,000 $\quad$ (c) ₹ 60,000 $\quad$ (d) ₹ 90,000 $\quad$
2. The amount spent on labour exceeds the amount spent on supervision by
(a) ₹ 60,000 $\quad$ (b) ₹ 36,000 $\quad$ (c) ₹ 90,000 $\quad$ (d) ₹ 1,00,000 $\quad$
3. The percentage of the total amount spent on cement, steel and supervision to the total cost of construction is
(a) 50% $\quad$ (b) 55% $\quad$ (c) 60% $\quad$ (d) 65% $\quad$
4. What fraction of the total cost of construction was spent on cement and steel together?
(a) $\frac{1}{4}$$\quad$ (b) $\frac{3}{10}$$\quad$ (c) $\frac{7}{20}$$\quad$ (d) $\frac{8}{15}$$\quad$
→
A rectangular MORE is shown below :
Image
Answer the following questions by giving appropriate reason.
(i) Is $R E=O M?$
(ii) Is $\angle MYO =\angle R X E?$
(iii) Is $\angle M O Y=\angle R E X?$
(iv) Is $\triangle M Y O \cong \triangle R X E?$
→
Find the square root of each of the following numbers by Division method. $529$
→