Question

only fivth question alone pls fast​

Answer 1

Answer:

$volume \: = \: 1.54 \: {m}^{2} \\ \\ diameter = 140 \: cm \: \\ \\ radius = \: \frac{140}{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 70 \: cm \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 0.7 \\ \\ volume \: = \pi {r}^{2} h \\ \\ 1.52 = \frac{1.54(7)}{22(0.7)(0.7)} \\ \\ \frac{1.54(7)}{22(0.7)(0.7)} = h \\ \\ \\ \\ h = 1$

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Answer 2

☯ SOLUTION:-

♨ Answer:-

100 cm or 1 m.

♨ Step-by-step explanation:-

Diameter = 140 cm => r= 140/2 = 70 cm.

Now,

Let the height of the cylinder be h.

Volume = πr²h

= 22/7 × (70)² × h

=22/7 × 70 × 70 × h

Since, volume of the cylinder is 1.54 m³,

Therefore,

22/7 × 10 × 70 × h = 1.54 × 1000000 = 1540000

or

h= 1540000/22 × 10 × 70

=> h= 100 cm or 1 m.

Therefore, the height of the given cylinder is 1 m or 100 cm.

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