3. A rectangular floor of dimensions
2 answers:
<h2>
Answer:</h2>
<u>Area of rectangular floor</u> = l × b
= 8.4m × 5.4m = 45.36m².
<u>Area in cm</u>² :- 45.36 × 10000 = 4,53,600cm².
<u>Area of triangular marble pieces</u> = 1/2 × b × h
= 1/2 × 40 × 30 = 20 × 30 = 600cm².
So, <u>No. of marbles</u> = 453600cm²/600cm²
= 756 marble pieces.
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.
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