The department of arithmetic that offers geometric figures and their parameters like length, extent, shape, floor area, lateral floor area, and so on are called Mensuration.
It is all approximately the size of the aircraft's area, perimeter, extent, and stable figures.
Area
The surface blanketed via the borderline of the determine is the vicinity of the obvious shape. Unit of the vicinity is rectangular if the duration unit.
Perimeter
- The perimeter is the duration of the boundary of the aircraft shape.
- The unit of the fringe is similar to the duration unit.
Area of Trapezium
A trapezium is a quadrilateral whose aspects are parallel. And if its non-parallel aspects are identical, its miles are stated to be an isosceles trapezium.
Area of Special Quadrilaterals (Rhombus)
A rhombus is a quadrilateral with all aspects identical and parallel, however now no longer the proper angle. Its diagonals are the perpendicular bisector to every other.
Area of a Polygon
There isn't any precise system for the vicinity of the polygon, so we want to divide it into a probable variety of figures like a triangle, rectangle, trapezium, and so on. By including the vicinity of all of the cut-up figures, we can get the vicinity of the specified polygon.
Mensuration Sample Questions for Class 8
Question 1
Who has more capacity to hold water a cuboidal tank of 56cm ×32cm×10cm dimension or a cylindrical tank of radius 28cm and heigh 7 cm?
A. Cuboidal tank
B. Cylindrical tank
C. Both are same
D. Cannot Say
Question 2
Raju wants to paint his drawing room.
Which formula he should use to measure the area to be painted?
A. Total surface area
B. Lateral surface area
C. Total surface area - area of flooring
D. Lateral surface area - area of flooring
Question 3
Three cubes each of 20 cm side are joined end to end. Find the surface area of the joined figure.
A. 5600 sq cm
B. 2400 sq cm
C. 2000 sq cm
D. 3800 sq cm
Question 4
There is a ice cube of size 4 mm . The dimension of ice tray is 12 cm × 8 cm ×10 cm. How many ice cubes can we make from this ice tray?
A. 15000
B. 2000
C. 6000
D. 10000
Question 5
What is the area of this figure?
A. 0.0068 sq m
B. 68 sq cm
C. Both a and b
D. None of the above