the floor of the building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45cm and 30cm in length. find the total cost of polishing the floor, if the cost per m² is Rs 4 ?
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Answer:
Rs. 810.
Step-by-step explanation:
STEP 1 : TO FIND THE AREA OF A SINGLE TILE.
FORMULA FOR AREA OF RHOMBUS IS = P × Q ÷ 2
( WHERE ARE P AND Q ARE TWO MEASUREMENTS GIVEN FOR RHOMBUS. )
45 × 30 ÷ 2
= 1350 ÷ 2
= 675 sq.cm
WHICH EQUALS TO 0.0675 sq.m
STEP 2 : TO FIND THE AREA OF 3000 TILES.
0.0675 sq.m × 3000 = 202.5 sq.m
STEP 3 : TO FIND THE COST OF POLISHING FLOOR.
COST = TOTAL AREA × RATE PER sq.m
= 202.5 × 4
= 810 RS.
THEREFORE, COST OF POLISHING FLOOR WILL BE RS. 810.
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