Please help circle ones

Mathematics
Tutor: None Selected Time limit: 1 Day

Mar 11th, 2015

28)According to the question 16*x=48 so x=3 inch so dimensions of bigger rectangle is 16 X 3.(inch)

using the theorm if scale factor a:b area is a^2:b^2

we get one side of small rectangle=12inch

since 12 * y =27 we get y=2.25 inch.

30)using the theorm if scale factor a:b area is a^2:b^2

9:1 =2.7 :x so x=0.3cm^2

32)area to students ratio in ist case=20000/200=100

area to students ratio in second case 80000/395=202.5 so yes it will be large enough.....


Mar 11th, 2015

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