Question

How much water can be filled in 7680 seconds in a box made of 5face having area equal to the area of a rectangle of length 80 cm and breadth half of it if 1 liter water can be filled in 1 minute.

Answer 1

Area of Rectangle = Length × Breadth

                              =     80     ×    40

                              =     3200 $cm^{2}$

Area of Right Rectangular Pyramid

A = lw + l $\sqrt{(\frac{w}{2} } )^{2}+h^{2}+w\sqrt{(\frac{l}{2} } )^{2}  +h^{2}$

Now, As given in Question , Area of Pyramid = Area of Rectangle

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In 1 minute 1 litre water can be filled.

⇒ in 60 seconds 1 litre water can be filled

⇒ In 7680 seconds = 7680/60 = 128 litre water can be filled.

Disclaimer - Kindly ask such question in Math Subject.