Find the sub-duplicate ratio of the following c - Vidyadip

Question

Find the sub-duplicate ratio of the following
c

✓

Answer

$63 m ^2: 28 n ^2 $
$=\sqrt{63 m ^2}: \sqrt{28 n ^2}$
$=3 \sqrt{7} m : 2 \sqrt{7} n$
$=3 m : 2 n$
Sub-duplicate ratio $=3 m: 2 n$

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 "[3 marks sum]" from Ratio and Proportion→Ratio and Proportion — all question types→Mathematics STD 10 question papers→ICSE Board STD 10 question papers→ICSE Board question paper generator→

Similar questions

If x, y, z are in continued proportion prove that $\frac{(x+y)^2}{(y+z)^2}=\frac{x}{z}$

The sum of the ages of Vivek and his younger brother Amit is $47$ years. The product of their ages in years is $550$. Find their ages.

Find the sum of G.P.: $1-\frac{1}{3}+\frac{1}{3^2}-\frac{1}{3^3}+\ldots \ldots . .$. to $n$ terms

Find the amount of bill for the following intra-state transaction of goods/services.

MRP (in Rs.)	12,000	15,000	9500	18,000
Discount %	30	20	30	40
CGST %	6	9	14	2.5

Salman buys 50 shares of face value Rs 100 available at Rs 132.
(i) What is his investment?
(ii) If the dividend is 7.5% p.a., what will be his annual income?
(iii) If he wants to increase his annual income by Rs 150, how many extra shares should he

A man has a Recurring Deposit Account in a bank for 3 1/2 years. If the rate of interest is 12% per annum and the man gets Rs 10,206 on maturity, find the value of monthly instalments.

Solve the following inequation and represent the solution set on the number line:
$
4 x-19<\frac{3 x}{5}-2 \leq-\frac{2}{5}+x, x \in R
$

Using factor theorem, show that $(x - 3)$ is a factor of $x^3 - 7x^2 + 15x - 9$, Hence, factorise the given expression completely.

Use a graph paper to answer the following questions. (Take 1 cm = 1 unit on both axis):
(i) Plot A (4, 4), B (4, – 6) and C (8, 0), the vertices of a triangle ABC.
(ii) Reflect ABC on the y-axis and name it as A’B’C’.
(iii) Write the coordinates of the images A’, B’ and C’.
(iv) Give a geometrical name for the figure AA’ C’B’ BC.
(v) Identify the line of symmetry of AA’ C’ B’ BC.

Prove the following identity:
$
\frac{\sin A}{1+\cos A}+\frac{1+\cos A}{\sin A}=2 \operatorname{cosec} A
$