Melissa here please help the circled ones

Mathematics
Tutor: None Selected Time limit: 1 Day

Mar 11th, 2015

24.

Scale factor = ratio of length of corresponding sides = Ratio of perimeter = 2:5

and ratio of their areas = square of scale factor = 4:25

26.

Scale factor = 1:4

Area of one decagon = 50cm2

Area of other decagon = 16/1 * 50 = 800cm2

Mar 11th, 2015

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