Oblicz pole koła wpisanego w trójkąt równoboczny o boku 10
1.
r = ⅓h
h = a√3/2
h = 12√3/2
h = 6√3
r = ⅓*6√3
r = 2√3
P = πr²
P = π*(2√3)²
P = 12√3π
2.
r = ½√2
r = ½*10√2
r = 5√2
L = 2πr
L = 2π*5√2
L = 10√2π
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1.
r = ⅓h
h = a√3/2
h = 12√3/2
h = 6√3
r = ⅓*6√3
r = 2√3
P = πr²
P = π*(2√3)²
P = 12√3π
2.
r = ½√2
r = ½*10√2
r = 5√2
L = 2πr
L = 2π*5√2
L = 10√2π