For a triangle the area is given as:

Re-arrange / solve for 'h':

Substitute known values:

Compute:

Answer
A.CD
Cause theCD is the mid point of triangle ADB which divides triangle in two half if you look carefully you can understand the diagram ☺️☺️
Answer:
54=12+r
Step-by-step explanation:
'Sum' means to add.
Answer:
81
Step-by-step explanation:
If a number is divisible by 11, then you can make those numbers by multiplying 11 by any number. Like 33 is divisible by 11 because 3×11 is 33.
Of course, 33 is too small, we are looking for 3-digit numbers...
see image.