Question

9. The number of marble slabs of size 20 cm *30 cm required to pave floor of a square room of side 3 metr​

Answer 1

Answer:

1500 slabs

Step-by-step explanation:

Area of slab = 20 x 30

= 60 cm

Area of room = 3 cm = 300 x 300 = 90000 cm

= Slabs required = 90000/60

= 1500 slabs.

Answer 2

Answer:

Given :-

• Size of marble = 20 cm × 30 cm
• Side of Square room = 3 m = 3 × 100 = 300 cm

To Find :-

Marble required

Knowledge Required :-

Area of Marble slab = Length × Breadth Unit

Area of Room = Side² unit

Marble slabs Required = Area of Room/Area of Slab

Solution :-

Area of marble slab = 20 × 30

Area of slab = 600 cm²

Now,

Area of room = 300 × 300

Area of room = 90,000 cm²

Now,

Total marble slabs = 90,000/600

Total marble slabs = 1500 slabs

Know More :-

A rectangle is 4 sided figure with length and breadth.

Sum of all angle in rectangle is 360⁰

It has 2 diagonal