Question

Expansion of root5

The ratio of the length and breadth of a photo frame is 5:3 find the length of the photo frame if the breadth is 15 cm

1. The ratio between perimiter square to side length?
   

A metallic solid sphere of radius is 10.5 is melted and recast into a smaller solar dconf each of radius 3.5 and height 3 cm how many cone will be made

Ncert exercise 16.3 16th question

maths chp 3class 11examples trigonometric function

dy÷dx=(2x^2+3x-2y+3)÷2y^2-3y+2x-3

1. I could not get you where you wrote that (1.57)^99=2.57×10^99
2. How did you calculate this in chapter 6 exercise 6.2 application of derivative class12
3.