7 are + 4 dam2 = ... m2

jadi kita mengubah satuannya kedalam bentuk m^2
1.) 1 are = 1 dam^2
maka 7 are = 7 dam ^2 = 7 × 100 = 700 m^2
2.) 1 dam^2 = 1 m^2
berarti 4 dam^2 = 4 × 100 = 400 m^2
maka > 700 + 400 = 1100 m^2