Distance between points (0, 0) and (36, 15).
\(=\sqrt{(36-0)^2+(15-0)^2}=\sqrt{36^2+15^2}\)
\(=\sqrt{1296+225}=\sqrt{1521}=39\)
Yes, we can find the distance between the given towns A and B.
Assume town A at the origin point (0, 0).
Therefore, town B will be at point (36, 15) with respect to town A.
Hence, as calculated above, the distance between towns A and B will be 39 km.
Determine if the points (1, 5), (2, 3) and (– 2, – 11) are collinear
In a classroom, 4 friends are seated at points A, B, C and D. Champa and Chameli walk into the class and after observing for a few minutes Champa asks Chameli, “Don’t you think ABCD is a square?” Chameli disagrees. Using the distance formula, find which of them is correct.
Find the point on the x-axis which is equidistant from (2, –5) and (–2, 9).
| Case No. | Lens | Focal Length | Object Distance |
|---|---|---|---|
| 1 | \(A\) | 50 cm | 25 cm |
| 2 | B | 20 cm | 60 cm |
| 3 | C | 15 cm | 30 cm |