Question
The length of a rectangle is four times its breadth. If
its length is increased by 20 cm and breadth is increased by 20 cm, the area of the rectangle is increased by 900 cm2. Find the length of the rectangle.Solution
Let Breadth = x and Length = 4 x ∴ Original area = 4 x × x = 4 x² Now, New Area = ( 4 x +20 ) x (x +20) ∴ ( 4 x +20 ) × (x +20) - 4x² = 900 ⇒ 100x=900 – 400 ⇒ x= 5 ∴ l = 4 × 5 = 20cm
Which of the following is an example of CAM plant?
Brassica carrinata is a cross between
Which process share the same pathway as glycolysis but in opposite direction?
What is the primary role of abscisic acid (ABA) in stomatal movement?
Which pathway is described as the movement of water through the cell walls and intercellular spaces of the plant?
Which of the following plants requires a long uninterrupted dark period to flower?
Which statement about transpiration is true?
Which plant has stomata only on the upper surface of its leaves?
Which hormone is involved in the bolting of rosette plants like cabbage and promotes stem elongation?
In the following given options, What is the importance of mitosis cell division?
Relevant for Exams:
