Nick has a small triangular shaped lawn. What could be the lengths of the three sides of the lawn?

20m, 30m, 55m

30m, 40m, 75m

20m, 30m, 40m

30m, 40m, 70m

Question

Nick has a small triangular shaped lawn. What could be the lengths of the three sides of the lawn? 

 20m, 30m, 55m 

 30m, 40m, 75m 

 20m, 30m, 40m 

 30m, 40m, 70m

lgbasallote · Answer

apply this rule:
a+ b > c
a + c > b
b + c > a

let's look at A.
20 + 30 > 55?
50 is not greater than 55 so that cant be the answer..

look at B.
30 + 40 > 75?
70 is not greater than 75 so that's not the answer either

lgbasallote · Answer

do you get where im going?

anonymous · Answer

yes, at first i was just trying to do a sq. + b sq. + c sq.. but doesnt that just work with right triangles

anonymous · Answer

ah, its the last one right because 40 and 30 equal 70

lgbasallote · Answer

nope..like i said it should be greater than