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BiRRAP, , Visit : www.irrap.com whatsapp : 8112775857, , « Perimeter: Length of boundary of a simple closed figure., Perimeter of:, Rectangle = 2(| + b), Square = 4a, Parallelogram = 2(sum of two adjacent sides), Area: The measure of region enclosed in a simple closed figure., Area of a trapezium = half of the sum of the lengths of parallel sides x perpendicular distance between them., Area of a rhombus = half the product of its diagonals., « Triangle = 4 x base x height, , Diagonal of: _, Rectangle = V7 +b, Square = V 2a, Surface area of a solid is the sum of the areas of its faces., Surface area of:, , T, h, , L, , ., , ., , , , , , , , , , A, —Ir, a cuboid = 2(Ib + bh + hi), , , , t, , |, , (p>, i, , , , =", a cube = 6!, , =i, , <a |, mero, , a cylinder = 2zr (r + h), , Amount of region occupied by a solid is called its volume., + Volume of, , a cuboid =Ixbxh, , acube =|°, , a cylinder = arh, , (i) 1 cm = 1 ml, , (ii) 1L = 1000 cm?, , (ili) 1m? = 1000000 cm? = 1000L, , , , , , Telegram channels : @IRRAPGOVJOBS , @IRRAPSET , @IRRAPNFB , @IRRAPIFB