Area Class 8 Very Short Question Answer

Area Class 8 Very Short Question Answer

Area Class 8 Very Short Question Answer

Question 1.

A hedge boundary needs to be planted around a rectangular lawn of size 72 m × 18m. If 3 shrubs can be planted in a metre of hedge, how many shrubs will be planted in all ?

Answer:

540

Question 2.

The perimeter of a rectangle is 40 m. Its length is four metres less than five times its breadth. Find the area of the rectangle.

Answer:

64 m²

Question 3.

Three squares are attached to each other as shown in the figure. Each square is attached at the mid-point of the side of the square to its right. Find the perimeter of the complete figure.

Answer:

33 cm

Question 4.

Find the area of a parallelogram of base 9 cm and corresponding height 4 cm.

Solution:

Area = 9 × 4 = 36 sq. cm.

Question 5.

If area of a rhombus with one diagonal 25 cm is 250 sq. cm, then find the length of its other diagonal.

Solution:

Area of a rhombus = [latex]\frac{1}{2}[/latex]d₁ × d₂

So, [latex]\frac{1}{2}[/latex] × 25 × d₂ = 250

⇒ d₂ = [latex]\frac{250 \times 2}{25}[/latex] = 20 cm.