find the height of the solid circular cylinder of total surface area 660 CM square and radius 5 cm
Answers
Answered by
8
TSA of cylinder=2Πr(h+r)
660=2×22/7×5(5+h)
660×7/22×5×2=(5+h)
660×7/22×10=(5+h)
3×7=5+h
21-5=h
16 cm=h
660=2×22/7×5(5+h)
660×7/22×5×2=(5+h)
660×7/22×10=(5+h)
3×7=5+h
21-5=h
16 cm=h
Answered by
1
FRIEND WE KNOW THAT AREA OF CYLINDER =2πrh+2πr²
given r=5cm
2×22/7×5×h+2×22/7×25=660cm²
220/7 h +1100/7=660cm²
220/7h=660×7/1100
220/7h=4.2
h=4.2×7/220
h=0.13363634569681 cm
given r=5cm
2×22/7×5×h+2×22/7×25=660cm²
220/7 h +1100/7=660cm²
220/7h=660×7/1100
220/7h=4.2
h=4.2×7/220
h=0.13363634569681 cm
Similar questions