Si se quiere calcular la longitud de una circunferencia de radio 50 cm, el resultado correcto es: A.

314.15 cm2

B.

157.08 m2

C.

7854 m2

D.

157.08 dm2
pueden responder lo antes posible estoy en examen y me quedan 10 minutos

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?