geometria plana Flashcards

1
Q

como calcular a area da coroa circular mais rapido

A

A= A=pi.(tamanho da corda/2)^2

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2
Q

Quanto vale a medida do ângulo interno de um octógono

A

135

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3
Q

quanto e a area de uma esfera

A

4/3 x pi x r3

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4
Q

em um triangulol equilatero quanto vale a sua altura

A

h=L√3/2

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5
Q

o que e o baricentro de um triangulo

A

e o ponto do meio

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6
Q
A
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