Question

If two cylinder with same base , radius and height are put one on the other , write the expression to find the total surface area of the resulting cylinder ​

Answer 1

Answer:2*(pi)*radius*(2*hieght+radius)

Step-by-step explanation:

Total surface area of a cynlinder is :

2*(pi)*radius*(hieght+radius)

Since every quantitiy remain same then:

2*(pi)*radius*(2*hieght+radius)

Answer 2

answer:

tsa of cylinder: 2πr(h+r)

• 2πr1(h1+r1)+2πr2(h2+r2)

r1=r2,h1=h2

• 2π(r1h1 +r1²)+2π(r2h2+r2²)
• 2π(r1h1+r1²)+(r2h2+r2²)
• 2π(r1 h1+r1²+r2 h2+ r2²)
• r1=r2
• h1=h2
• 2π(r1 h1 +r1²+r1h1+r1²)
• 2π(2r1 h1+2r1²)
• 2π(2rh+2r²)
• 4πrh+4πr²
• 4πr(r+h)