a floral design on a floor is made up of 16 tiles, each triangular in shape having sides 16cm, 12 cm and 20cm. find the cost of polishing the tiles at the rate of rs. 2 per sq.cm.
Answers
Answered by
2
Answer:
RS 3072.00
Step-by-step explanation:
heris formula s =(a+b+c)/2
s= (16+12+20)/2
=24
area = √(s(s-a)(s-b)(s-c)}
= √{24(24-16)(24-12)(24-20)}
area = √{24*8*12*4}
= √{4*6*4*2*6*2*4}
=4*6*2*2
=96cm^2
no of tiles = 16
total area = 16*96=1536cm^2
cost of polishing rs2/cm^2
total cost = 1536*2=RS 3072
Similar questions