Question

Help anyone?

At a place where a river is 7.5m wide and depth is measured every 1.5m across the river.

distance across river(m):0 | 1.5| 3 | 4.5| 6| 7.5
Depth of river (m): 0.6|2.3|3.1 | 2.8|1.8|0.7

Use the trapezium rule with 5 strips to estimate the area of cross-section of the river.

Answer 1

bt then is it mentioned to be 0???