Question

plz answer the questions 1 and 2

Answer 1

Heya dear user !!!

Here is your answer,

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1.Find the cube root of 4741632 by estimation method.

$\sqrt[3]{4741632}$
..(II).. ..(I)..
___ ___
4741 632

Group (I) => 632, one place is 2,so cube root of one place is 8

As because in (8)³ = 512 one place is 2

Group (II) => 4741 = 4096 < 4741 < 4913

= (16)³ < 4741 < (17)³

We will take the smaller one = 16

Hence,
$\sqrt[3]{4741632} = 168$

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2. Find the volume of a cube whose surface area is 150 m²

Solution :
Surface area of cube = 6×(side)²
=> 6×(side)² = 150
=> (side)² = 150/6
=> (side)² = 25
=> side = √25
=> side = 5

Side of the cube = 5m

Volume of the cube = (side)³
= (5)³
= 5×5×5
= 125m³

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Hope it helps.