4.
Area of rectangle 1 = (l x h) +Area of rectangle 2 = (l x h) +Area of rectangle 3 = (l x b) +Area of rectangle 4 = (l x b) +Area of rectangle 5 = (b x h) +Area of rectangle 6 = (b x h) =2(l x b) + 2(b x h) + 2(l x h) =2(lb + bh + hl)
5.
h Base area = l x b Height = h So, Volume of a cuboid b =lxbxhl
7.
Area of square 1 = a xa Area of square 2 = a xa Area of square 3 = a xa Area of square 4 = a xa Area of square 5 = a xa Area of square 6 = a xaSurface area = Area of all six faces = 6a2
8.
a Base area = a Height = aa So, Volume of a cube = a3
9.
CURVED SURFACE AREA OF A CYLINDER Circular Curved surfaces surface areaArea of curved surface + Area of two circular surfaces =(2 π r) x( h) + 2 π r2 = 2 π r( h+ r)
10.
Area of circular base =π r2Height = hSo, Volume of acylinder= π r2 x h