A rectangular field has a length of 20 metres and a width of 5 metres. If its length is increased by 10\:m, by how many square metres will its area be increased?
Answer Choices
A. 10
B. 20
C. 50
D. 75
E. 100
A rectangular field has a length of 20 metres and a width of 5 metres. If its length is increased by 10\:m, by how many square metres will its area be increased?
Answer Choices
A. 10
B. 20
C. 50
D. 75
E. 100