How does the total surface area of a box changed if each dimension is doubled? 

Correct Answer - (i) `432 cm^(3), 180 cm^(2), 372 cm^(2)` (ii) `2366 m^(3), 520m^(2), 1248 m^(2)` (iii) `45 m^(3), 21 m^(2), 201 m^(2)` (iv) `36m^(3), 291 m^(2), 303 m^(2)`

Correct Answer - `269.5 cm^(3)`

Correct Answer - `1078 cm^(3)`

Correct option is C) a = b

Correct option is (D) 16 Let \(l,b\;and\;h\) are length, breadth and height of the original cuboid. After increasing each dimension of cuboid by 4 times, length of formed cuboid \(=4\,l,\) breadth of formed cuboid = 4b and height of formed...

Correct option is (A) T.S.A. of the box will become 4 times of original area. Let \(l,b\;and\;h\) are parameters of original box. \(\therefore\) \(2l,2b\;and\;2h\) are parameters of new box. \(\therefore\) Total surface area of new box \(=2\,(2l\times2b+2b\times2h+2h\times2l)\) \(=8\,(lb+bh+hl)\) \(=4\times2\,(lb+bh+hl)\) \(=4\times\) Total surface area of original...

Correct option is (C) Decreased by 50% Let r and h be parameters of original cylinder & R and H be parameters of another cylinder. Let R = 2r Also \(2\pi RH=2\pi rh\)   ...

A) force increases, friction increases