Question

d' and 'b' are any integers
5. A metal cuboid of dimensions 22 cm x 15 cm x 7.5 cm was melted and cast inte
cylinder of height 14cm. Find its radius.

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Answer 1

Answer:

volume of cuboid =volume of cylinder

lxbxh. =πr*h

22x15x7.5=22/7r*x14

56.25=r*

7.5=r

r=7.5

Answer 2

Answer:

since it melted from cuboid to cylinder it means we hv to use volume formula

volume of cylinder = Volume of cuboid

$\pi \: {r}^{2}h = l \times b \times h$

22/7 x r x r x 14 = 22 x 15 x 7.5

22/7 x r x r x 14 = 2475

${r}^{2} = \frac{2475 \times 7}{22 \times 14}$

${r}^{2} = 11025$

taking square root of 11025

r = 105