Question

the area of a fertile field is 512 m . A square field with the side 20 m is used to plant potatoes . How much area is left un plant​

Answer 1

total area of field 513 m

square used :- 20 m × 20 m -->$400 m^2$

so left area -->

$512 - 400 = 112 {m}^{2}$