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the sum of perimeter of two similar polygons is 48cm,and the ratio of their corresponding sides is 1:3, find the perimeter of the larger polygon​

Sagot :

Answer:

Step-by-step explanation:

Perimeter is the sum of lengths of triangles. Hence it's unit in

c

m

. Area has unit

c

m

2

i.e., length squared. So if measurements are in the ratio

3

:

4

, areas are in the ratio

3

2

:

4

2

or

9

:

16

. This is because the two triangles are similar.

A total area is

75

square centimeters, we need to divide it by the ratio

9

:

16

Of which first will be the area of the smaller triangle.

Hence the area of the smaller triangle is

75

×

9

9

+

16

=

75

×

9

25

=

75

3

×

9

25

1

=

27

square centimeters

The area of larger triangle would be

75

×

16

9

+

16

=

3

×

16

=

48

square centimeters

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