Math, asked by abhaysingh32, 1 year ago

a cylindrical vessel open at the top has a base diameter of 21 cm and height 14 cm find the cost of tin plastering its inner part @ rupees 5 per centimetre square

Answers

Answered by harshita113

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 square

area of base circle= πr square

22/7×14

(14 will be eliminate with 7)

22×2=44

924+44=968cm square

968×5/100=4840/100

answer=48.4 rupees

harshita113: Mark me as brain list

harshita113: How

abhaysingh32: I don't know

arithwikrayani: it is wrong

arithwikrayani: you took radius as 14

abhaysingh32: are you right

abhaysingh32: no then my answer sheet is wrong

arithwikrayani: yes my answer is correct

arithwikrayani: checked twice

abhaysingh32: OK thanks if there is any problem I ask again

Answered by arithwikrayani

please mark as brainliest answer

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