120
a triangular cylinder
h square − 5h = 70
8
6 centmeters
If you mean a rectangle, just multiply the length times the height. If (for example) length and height are in centimeters, then the area is in square centimeters. Similar for other units.
It works out as 12 cm
a triangular cylinder
1 square
16
h square − 5h = 70
8
The volume of a cylinder is the area of its base times its height. 10 pi square centimeters * 25 centimeters = 250 pi centimeters cubed = 785.398 centimeters cubed
72 cm square.
6 centmeters
(Base X (Height)2) Divided by two
If you mean a rectangle, just multiply the length times the height. If (for example) length and height are in centimeters, then the area is in square centimeters. Similar for other units.
None, because there can be no such thing as a triangular square. If it is triangular it cannot be a square, if it is a square it cannot be triangular.