a bucket made up of metal sheet is in the form of cone of height 16 cm with radius of its lower and upper ends is 8 cm and 20 CM respectively find the cost of bucket if the cost of metal sheet used is rupees 15 per CM square use (pi 3.14)
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Slant height of bucket,l=√h^2+(R-r)^2
=√(16)^2+(20-8)^2
=√400=20cm
Curved Surface Area of bucket=πl(r+R)
=3.14(20)(20+8)
=1759.29cm^2
Cost of bucket=1759.29×15
=Rs 26389.35
=√(16)^2+(20-8)^2
=√400=20cm
Curved Surface Area of bucket=πl(r+R)
=3.14(20)(20+8)
=1759.29cm^2
Cost of bucket=1759.29×15
=Rs 26389.35
ankitsinghgame:
wrong
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