Page 2 :
Click on the blue logo for, 1% part video lesson, , , , Click on the blue logo for, 4‘ part video lesson, , , , , , Click on the blue logo for, 24 part video lesson, , , , , , Click on the blue logo for, 5th part video lesson, , , , , , , , , , , , Click on the blue logo for, 3" part video lesson, , , , , , Click on the blue logo for, 6 part video lesson

Page 3 :
Cuboid, Cone, , , , Lateral surface area = Z2h(Il + b), , , , , Total surface area = 2(lh + bh + lb) Lateral surface area = mrl, , vi Volume = lbh l Total surface area = mr(l+1r), , , , Volume = gmrh, Cube, , , , Lateral surface area = 41? Sphere, , Total surface area = 612 surface area = 4nr2, , Volume = [3 3, , Volume = gr, , , , Click on the blue logo for, 1s part video lesson, , , , Cylinder, , , , , , , , Hemi sphere, , Lateral surface area = 221?, , Lateral surface area = 2mrh, , Total surface area = 2mr(h+r), , Volume = 172k Total surface area = 32r*, , 3, , , , Z, Volume = ger

Page 4 :
EXERCISE — 10.1, , 1. A Joker’s cap is in the form of right circular cone whose base radius is 7 cm and, height is 24 cm. Find the area of the sheet required to make 10 such caps., , Sol: Radius of the base of capisr =7cm, Height of the capish= 24cm, , slant height of the cap is 1 = \r? + h?, , = /72 +242, = V49 +576, = 1=25¢em = V625 =25, , lateral surface area of the cap = mrl, , ae aK 25, 7, =22x25, , = 550, .. lateral surface area of the cap = 550 cm?, , i.e.area of the sheet required for 1 cap is 550 cm”, , , , , , Now, area of the sheet required for 10 caps, = 10x 550, = 5500, , -. Area of the sheet required to make 10 caps, is 5500 cm?

Page 5 :
EXERCISE — 10.1, 2. A sports company was ordered to prepare 100 paper cylinders for packing shuttle cocks., The required dimensions of the cylinder are 35 cm length/height and its radius is 7 cm. Find, the required area of thick paper sheet needed to make 100 cylinders., Sol: Radius of required cylinder isr = 7cm, , Height of the cylinder ish = 35cm, Total surface area of cylinder = 2nr(h+r), , 22, =2x—x7x 35 +7), =2x22 x42, = 1848, , -. Total surface area of the cylinder = 1848 cm?, i.e.area of thick paper sheet required for 1 cylinder is 1848 cm”, Now, area of the paper sheet required for 100 cylinders, , = 100 x 1848, = 184800, , .. Area of the paper sheet required make 100 cyliders is 184800 cm?