uiturucuolal sulauulindrical vessel open at the top has a base diamete

1.	uiturucuolal sulauulindrical vessel open at the top has a base diameter of 21 cm and height 14 cm. Find the costof tin plating its inner part at the rate of 5 per 100 cm
Answer» diameter= 21 cm radius=21/2=10.5 height=14 cm curved surface area of cylinder= 2πrh 2×22/7×10.5×14 44/7×10.5×14 (14 will be eliminate with 7 ) 44×10.5×2=88×10.5 924cm squarearea of base circle= πr square 22/7×14 (14 will be eliminate with 7) 22×2=44924+44=968cm square 968×5/100=4840/100 answer=48.4 rupees

uiturucuolal sulauulindrical vessel open at the top has a base diameter of 21 cm and height 14 cm. Find the costof tin plating its inner part at the rate of 5 per 100 cm

Answer»

diameter= 21 cm

radius=21/2=10.5

height=14 cm

curved surface area of cylinder= 2πrh

2×22/7×10.5×14

44/7×10.5×14

(14 will be eliminate with 7 )

44×10.5×2=88×10.5

924cm squarearea of base circle= πr square

22/7×14

(14 will be eliminate with 7)

22×2=44924+44=968cm square

968×5/100=4840/100

answer=48.4 rupees