Download App

Squares and Square Roots — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSSquares and Square Roots1 Mark
MCQ
Mark $(\checkmark)$ against the correct answer $\sqrt{72}\times\sqrt{98}=\ ?$
  • A
    $42$
  • ✓
    $84$
  • C
    $64$
  • D
    $74$
✓

Answer

Correct option: B.
$84$
$\sqrt{72}\times\sqrt{98}$
$=\sqrt{2\times2\times2\times3\times3}\times\sqrt{2\times7\times7}$
$=\sqrt{2\times2\times2\times3\times3\times2\times7\times7}$
$=2\times2\times3\times7$
$=84$

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 "M.C.Q. [1 Marks Each]" from Squares and Square Roots→Squares and Square Roots — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Three cubes of iron whose edges are 6 cm, 8 cm and 10 cm respectively are melted and formed into a single cube. The edge of the new cube formed is
→
The square of a natural number subtracted from its cube is $48$. The number is:
→
If the weight of $12$ sheets of thick paper is sheets of thick paper is $40$ grams, how many sheets of the same paper would weigh $2500$ grams?
→
The unit digit in the square of the number $78$ is:
→
If $a$ and $b$ are positive integers, then the solution of the equation $ax = b$ has to be always:
→
Which is the like term as $36\text{ abc}^2?$
→
The multiplicative inverse of $\Big(-\frac{5}{9}\Big)^{-99}$ is:
→
A number exceeds $20 \%$ of itself by 40 . The number is
→
Study the following frequency distribution table and answer the questions given below:
Daily wages
Number of works
$290-325$ $5$
$325-360$ $2$
$360-395$ $4$
$395-430$ $6$
$430-465$ $7$
$465-500$ $5$
The size of the class intervals is:
→
If $2x + y = 5$ then $4x + 2y$ is equal to:
→