Question

a closed metallic cylinder has its base diameter 56cm and it's hii2.25m.find the cost of the metal to make it if it costs ₹80 per square metre

Answer 1

Answer:

Step-by-step explanation:

Radius=Diameter/2=56/2cm=28cm

Height=2.25m

To convert radius into m

Therefore, 28/100m=0.28m

T.S.A=2πr (r+h)=2×22/7×0.28*(0.28+2.25)=1.76*2.53m^2=4.4528m^2

Cost of metal=$(4.4528*80)=$356.22

Answer 2

your answer ✌

hope it will help you...................