Question

ch 8 and ch9 all the formulas of surface area and area class 9 maths​

Answer 1

total surface area of cube=6a^2

total surface area of cone=πrl+πr^2

volume of cone=πr^2 h/3

CSA of cone=πrl

CSA of cylinder=2πrh

Surface area of cylinder=2πrh+2πr^2