Genral knowldge !
pi r squre r=radius it's do circular calculation.circumferance the part of circle mesaurment.projectyle one righid body thro in the space as it fall on the with an angle bellow.measurment distance velocity angle and time in space with time measurement. one glass water in ice flow convert to water what will be the leval.option 1,flow the water 2.constant 3.below. other knowledge amiba one cell body.one glass milk what mean to give as energy at daily drink.work = force*power. Mole concept or molarity base or acid apply an reaction with molecular wt.