Question

plz solve the question 15 plz

Answer 1

D = 3m r1 = 3/2 = 1.5m

h1 = 14m

width = 4m
hence r2 = r1 + width
r2 = 4 + 1.5 = 5.5m

h2 = ?

Embankment would be in the form of cylender so zvolume of sand dug out will equal to the volume of embankment.

so


$\pi \: r1 {}^{2} h1 \: = \pi \: r2 {}^{2} h2$

$(1.5) {}^{2} \times 14 = (5.5) {}^{2} \times h2$

$31.5 = 30.25 \times h2$


$31.5 \div 30.25 = h2$

$h2 = 1.04m$


Thus height of embankment will be 1.04m.



Thanks

Answer 2

ARYAN. PVT.......LTD...