Question

A saree is 6 m long and 1.2m wide A border of width 30cm is printed along its sides. Find the cost of printing the border at $1per 100cm square​

Answer 1

length 6m. new length 6+0.3
breadth 1.2m. =6.3
new breadth 1.2+0.3=1.5
area of Saree including border = 6.3*1.5
=9.45 m2
area of Saree excluding border =1.2*6=7.2 m2
area of border = 9.45 - 7.2 = 2.25 m2
1 m2=10000cm2
2.25 m2 =2.25 * 10000 =22500 cm2
100 cm2=$1
1 cm2 = 1/100
22500 cm2 =
$(1 \div 100) \times 22500 \\ = 225 \: dollar$
225$