the length of a roller is 40 cm and its diameter is 21 cm It takes 300 complete Revolution to move 1 to 10 the level the floor of a room find the area of a room in metres square
Answers
Answered by
0
2x22 upon 7x10. 5 this is the answer
Answered by
1
Answer:
Step-by-step explanation:
Height:40cm
Diameter:21cm
CSA: 2πrh
dπh
21×22/7×40
2640cm^2
For 300 revolutions: 2640×300
79200cm^2
Similar questions