Potrzebuję zadanie zawarte w załączniku. Z góry dziękuję.
a) k = 40/8 = 5
|CB| = |AC| = 5|EC| = 5|CD|
|AB| = 8|CD|
40 = 8*|CD|
|CD| = 5
|AC| = 5*5 = 25
20²+h² = 25²
h = 15
P = 15*40*½ = 300cm²
b)
P = πr²
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a) k = 40/8 = 5
|CB| = |AC| = 5|EC| = 5|CD|
|AB| = 8|CD|
40 = 8*|CD|
|CD| = 5
|AC| = 5*5 = 25
20²+h² = 25²
h = 15
P = 15*40*½ = 300cm²
b)
P = πr²