A closed metallic cylinder has its diameter 56 cm and it is 2.25m height find the cost of the metal used to make the cost of ₹ 80 per square metre.
Answers
Answer:
The cost of metal required is Rs. 356.224
Step-by-step explanation:
Given :
• A closed metallic cylinder has its diameter 56 cm
• Height of metallic cylinder = 2.25 m
• Rate of metal = ₹ 80 per square metre
To Find :
• The cost of metal required
Solution :
Diameter = 56 cm
★ Find the radius (r) :
⇒ r = Diameter / 2
⇒ r = 56 / 2
⇒ r = 28 cm
★ Convert the radius cm to m
1 m = 100 cm
⇒ 28 / 100
⇒ 0.28 m
⇒ r = 0.28 (in m)
★ TSA(Total surface area) :
TSA of cylinder = 2 π r (h + r)
⇒ 2 × 22 / 7 × 0.28 ( 2.25 + 0.28)
⇒ 4.4528 m²
★ The Cost of metal :
⇒ 4.4528 × 80
⇒ 356.224
Therefore,
The cost of metal required is Rs. 356.224
Answer:
The cost of metal required is Rs 356.224
Step-by-step explanation:
Given
Diameter = 56 cm
r = diameter / 2
r = 56/2
r = 28 cm
Now
Convert the radius cm to m
1 m = 100 cm
28 cm = 0 . 28 m
Total surface area of cylinder = 2πr ( h+r)
2×22/7×0.28 ( 2.25 + 0.28 )
4.4528 sq.m
Now ,
Cost of metal required = 4.4528 × 80
= Rs 356.224
Therefore ,
The cost of metal required is Rs 356.224 .
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