Question

The cross-section of a canal is in the form of a trapezium. If the top of canal is 15 m
wide, the bottom is 8 m and the area of cross-section is 138 m², find its depth.​

Answer 1

Answer:

12m

Step-by-step explanation:

The cross-section of the canal forms a trapezium in which the sides of 15m and 8m are parallel.

Here,

a=15m

b=8m

h=?   (height;in this case depth)

Area of trapezium = h/2(a+b)

                              = 138 = h/2(15+8)

                              = 276 = 23h

                              =h = 276/23

∴h=12m

So, the depth is 12m

Answer 2

Answer:

same

from Delhi

from class 8

name aisha

St Mark's senior secondary school delhi

please attach your photo

please

have a great day