Math, asked by akhileshar5910, 11 months ago

3 मीटर चौड़े उस कैनवस की लंबाई ज्ञात कीजिए, जिसकी आधार त्रिज्या 9 मीटर और ऊंचाई 12 मीटर के एक शंकु के आकार के तंबू को बनवाने में आवश्यक होगी। (π = 3.14 लीजिए)

Answers

Answered by harendrakumar4417
0

Length of the canvas will be 141.3 m

Step-by-step explanation:

Given

Width (b) = 3 m

Radius (r) = 9 m

Height (h) = 12 m

we know that surface area of cone = Area of canvas required

i.e \pi rl=length*width

l for cone can be calculated as

l= \sqrt{(h)^2+ (r)^2}

= \sqrt{(12)^2 + (9)^2}

= 15m

putting this value in above equation

3.14\times9\times15 = length\times3

On solving this we find that

length = 141.3 m

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