oblicz pole trójkonta równobocznego opisanego na okręgu o promieniu 8cm
r= 1/3h
8cm= 1/3h /*3
8cm* 3= h
h= 16cm
h= a√3/2
24cm= a√3/2 /*2
24cm= a√3 /: √3
a= 24/√3 cm = 24√3/√3*√3= 24√3/3= 8√3cm
P= a²√3/4
P= (8√3cm)²√3/4
P= 192√3cm²/4
P= 48√3cm²
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r= 1/3h
8cm= 1/3h /*3
8cm* 3= h
h= 16cm
h= a√3/2
24cm= a√3/2 /*2
24cm= a√3 /: √3
a= 24/√3 cm = 24√3/√3*√3= 24√3/3= 8√3cm
P= a²√3/4
P= (8√3cm)²√3/4
P= 192√3cm²/4
P= 48√3cm²