Question

3. A rectangular floor of dimensions

Answer 1

Answer:

Area of rectangular floor = l × b

= 8.4m × 5.4m = 45.36m².

Area in cm² :- 45.36 × 10000 = 4,53,600cm².

Area of triangular marble pieces = 1/2 × b × h

= 1/2 × 40 × 30 = 20 × 30 = 600cm².

So, No. of marbles = 453600cm²/600cm²

= 756 marble pieces.

Answer 2

Answer:

area of the floor = 540*840.

=453600 cm sq.

area of the marbal piece = 1/2 * 40* 30 = 600 cm sq.

now,

no. of marble piece reqd. = 453600 / 600 = 756 marbal piece.

hope it helps u.