manjeet

A RHOMBUS SHAPED SHEET WITH PERIMETER 40 CM. AND ONE DIAGONAL 12 CM., IS PAINTED ON BOTH SIDES AT THE RATE OF RS.5 PER METER SQUARE. FIND COST OF PAINTING.

The stiffness of a given length of beam is proportional to the product of the width and the cube of the depth. Find the shape of the stiffest beam which can be cut from a cylindrical log (of the given length) with cross-sectional diameter of D

A ladder is intended to reach the wall of a building, but it must clear a fence with the length of d that stands at the distance b from that wall. Find the shortest length of ladder required to arrange this. note use differential calculus

RELATIVE DISTANCE IS 5.4 METERS (VELOCITY=SPEED)TO FIND RELATIVE SPEED IN M/S, WE DO THAT A.T.Q. 9*1000/60*60=9000/3600=5/2 =2.5 M/S TIME TO PASS =5.4/2.5=2.16 DISTANCE=SPEED*TIME DISTANCE =2.5*2.16 =5.4 METERS

OPTION "B" IS NOT A FACT BUT LIKE AN OPINION BECAUSE THERE IS NOTHING WHICH IS NOT POSSIBLE FOR HUMANS.ALL OTHERS ARE PROVEN TRUE AND ARE FACTS OF SCIENCE.