Respuesta :

choixongdong

A = L * W

280 = 14 * A

A = 280 / 14

A = 20

A = 2 tens

Big rectangle: A = 280 + (14 * B)

378 =280 + 14B

14B = 378 - 280

14B = 98

B = 7

So length = 2 tens + 7 = 27

Answer

C. 2 tens + 7 = 27