Question

if 90% of the watermelon are full of water,then how much water(juice) will you get from the cubic watermelon of side 15 centimetre?​

Answer 1

Given :

The percentage of water in watermelon = 90%

The measure of one side = 15 cm

To Find :

The quantity of water from cubic watermelon

Solution :

∵ The shape of watermelon is sphere

So, Volume of watermelon = v = $\dfrac{4}{3}$ × π × radius³

                                                  =  $\dfrac{4}{3}$ × 3.14 × (15 cm)³

                                                  = 14130 cubic cm

Again

∵  The percentage of water in watermelon = 90%

So, quantity of water from cubic watermelon =  90 % of Volume of watermelon

                                                                          = $\dfrac{90}{100}$ ×  14130 cubic cm

                                                                          = 12717  cubic cm

∵  1 cubic cm = 0.001 liter

∴  12717 cubic cm = 0.001 × 12717 liter

                             = 12.7 liters

Hence, The quantity of water from cubic watermelon is 12.7 liters   Answer

Answer 2

Answer:

3.0375 litre

Step-by-step explanation:

A cubic watermelon is in the shape of a cube.

so ,Volume=(side)³. [side=15cm]

=(15)³

=3375cm³.

so ,volume of cubical watermelon=3375cm³.

OR

100% Volume of a cubical watermelon of , Side= 15 cm is 3375cm³

then 1% volume=(3375/100)cm³

And So - 90% volume=[(3375×90)/100]cm³

=[(3375×9)/10] cm³ {0 cancelled out}

=(30375/10)cm³. --because{9×3375=30375}.

=3037.5cm³ .

now, we know:

1cm³=(1/1000)litre

so, 3037.5cm³=3037.5÷(1/1000) litre

=(3037.5/1000) Litre

=3.0375 Litre.

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Hence 3.0375 litre water (juice) we will get from a cubic watermelon of side 15 cm.