A manufacturer sells mirrors in the shapes of squares. The smallest size mirror the manufacturer sells has an area of 4 fl2. The largest size mirror has an area of 9 ft2
Which graph represents the possible side lengths of the mirrors sold by the manufacturer?
8
Ο Α.
+
9
0
1
2
3
4
5
6
7
10
+
OB.
+
1
O
2
3
4
5
6
7
8
9
10
+
1
5
2
+
6
8
g
0
2
3
4
5
8
9
10
OD
+
1
+
2
+
3
0
2
4
5
6
8
9
10
Yeah

answer is 270 degrees: -

to convert radians to degrees you multiply by 180/π

9π/ 6 * 180 / π

=   9 * 180 / 6

= 9 * 30

=   270 degrees   answer

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5