The mean proportional of the line segment of lengths 4 cm and 2 cm is _____.
3
2.5
4
2
AB = 4 cm, BC = 2 cm. After construction, BD is the required mean proportional and BD = 2.5 cm
The mean proportional of the line segments of length 4 cm and 7 cm is ________.(Use geometric method)
The mean proportional of the lines 6 cm & 4 cm is _________.
If 3 line segments of length 2 cm, 4 cm and 6 cm are taken, then the area of the triangle formed by these line segments is ___.