Sasha is planning to create a garden with area 30 m2. She could use a rectangular, triangular, or a circular design. Sasha decides to use the design
that requires the least edging material. Which design should she use? How
much edging will it require?

Circle requires ≈ 20 m of edging

Step-by-step explanation:

A = πR²

R = √(A/π)

C = 2πR = 2π√(A/π)

C = 2π√(30/π) = 19.41625... ≈ 20 m

square needs ≈ 22 m of edging

equilateral triangle needs ≈ 25 m of edging

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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