a cylindrical bucket,28cm high and with radius of base 15cm is filled with sand. This bucket is emptied on the ground and a conical heap of sand is formed. if the height of the conical heap is 21cm . find the radius and slant height of the heap.
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3
Answer:
refer to the attachment
r'=30cm
l=36.6cm
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Answered by
1
Answer:
Answer is 15√4 cm...
Step-by-step explanation:
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Here The Formula Is
Volume of cylindrical bucket = volume of conical heap
πR²H = ⅓πr²h
Here 'π' get cancelled.. 15² x 28 = ⅓ x r² x 21
225 x 28 / 21 = ⅓ x r²
225 x 4 / 3 = ⅓ x r²
225 x 4 / 3 x 3 / 1 = r²
225 x 4 = r²
√ 225 x 4 = r
r = 15√4 cm
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