The hollow cylinder

The hollow cylinder has a height of 70 cm, an outer diameter of 180 cm, and an inner diameter of 120 cm. What is the body's surface, including the area inside the cavity?

Correct answer:

S =  94247.7796 cm2

Step-by-step explanation:

h=70 cm D1=180 cm D2=120 cm  o1=π D1=3.1416 180565.4867 cm o2=π D2=3.1416 120376.9911 cm  S1=π (D1/2)2=3.1416 (180/2)225446.9005 cm2 S2=π (D2/2)2=3.1416 (120/2)211309.7336 cm2  M=2 (S1S2)=2 (25446.900511309.7336)28274.3339 cm2  S=M+o1 h+o2 h=28274.3339+565.4867 70+376.9911 70=94247.7796 cm2

Did you find an error or inaccuracy? Feel free to write us. Thank you!

You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: