Question

Guys plzz help me plzz fastt​

Answer 1

Answer 1) :-

• Radius of marble = 1.4cm .
• Total marbles = 150 .

So,

→ Volume of 1 spherical marble = (4/3)πr³

→ Volume of 150 spherical marble = 150 * (4/3) * (22/7) * (1.4)³ = 50 * 4 * 22 * 0.2 * 1.96 = 1724.8 cm³ .

Now,

• Radius of cylindrical vessel = 7cm.
• Height of cylinder = Let h cm.

then,

→ Volume of 150 spherical marble = volume of cylindrical vessel

→ 1724.8 = π * (7)² * h

→ h = 1724.8/(22 * 7)

→ h = 11.2 cm. (Ans.)

Hence, Rise of water level in cylindrical vessel is 11.2 cm.

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Answer 2) :-

Let us assume that, required three numbers in AP are (a - d) , a and (a + d) .

So,

→ (a - d) + a + (a + d) = 27

→ 3a = 27

→ a = 9.

Also,

→ (a - d)² + a² + (a + d)² = 293

→ (9 - d)² + 9² + (9 + d)² = 293 .

using :-

• (a - b)² = a² + b² - 2ab
• (a + b)² = a² + b² + 2ab

→ (81 + d² - 18d) + 81 + (81 + d² + 18d) = 293

→ d² + d² + 81 + 81 + 81 = 293

→ 2d² + 243 = 293

→ 2d² = 293 - 243

→ 2d² = 50

→ d² = 25

→ d = ± 5 .

if d = 5 , Numbers are :-

• 9 - 5 = 4 .
• 9
• 9 + 5 = 14 .

if d = (-5) , Numbers are :-

• 9 - (-5) = 14 .
• 9 .
• 9 + (-5) = 4.

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Answer 2

Answer:

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and thanks for sending ur photo

Step-by-step explanation: