lilkay39 lilkay39

20-05-2019
Mathematics

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a regular pentagon had a perimeter of 25m and an area of 43.75m2 find the perimeter of a similar pentagon whth an area of 175m2

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jimrgrant1 jimrgrant1

20-05-2019

Answer:

50 cm

Step-by-step explanation:

Since the figures are similar then

linear ratios = a : b

area ratios = a² : b²

Here the ratio of areas = 43.75 : 175 = 1 : 4, thus

linear ratios = 1 : 2

The larger pentagon has a perimeter = 2 × 25 = 50 cm

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