Liz is hiking a trail that is 0.8 mile long. liz hikes the first two tenths of the distance by herself. she hikes the rest of the way with her friends. how far does liz hike by herself? ?

≈ 36.5 cm²

Step-by-step explanation:

Given the perimeters in ratio a : b , then

ratio of areas = a² : b²

Here ratio of perimeter = 20 : 28 = 5 : 7 , thus

ratio of areas = 5² : 7² = 25 : 49

let x be the area of larger , then using proportion

= ( cross- multiply )

25x = 911.4 ( divide both sides by 25 )

x ≈ 36.5 cm² ( to the nearest tenth )