Question

A × A = 16. A × B × B = 36. A×B×C= 72. A+B+C=?

Answer 1

I)

A² = 16

A = √16

A = 4

II)

4 . B² = 36

B² = 36/4

B² = 9

B = √9

B = 3

III)

4 . 3 . C = 72

12C = 72

C = 72/12

C = 6

IV) Finalmente:

A + B + C = 4 + 3 + 6 = 13

Answer 2

A x A = 16

A² = 16

A = √16

A = 4

_______________

A x B x B = 36

4 x B x  B = 36

   2B = 36/4

   B² = 9

   B = √9

   B = 3

-----------------------------

A x B x C = 72

4 x 3 x C = 72

12 x C = 72

      C = 72/12

      C = 6

---------------------------------

A + B + C =

4 + 3 + 6 = 13

bons estudos