Question
The perimeter of a rectangle is 48 cm, and the ratio of
its length to breadth is 3:5. What is the area of the rectangle?Solution
Let the length of the rectangle be 3x and the breadth be 5x. The perimeter of the rectangle is given by: 2 × (length + breadth) = 48 → 2 × (3x + 5x) = 48 → 16x = 48 → x = 3. So, the length is 3 × 3 = 9 cm and the breadth is 5 × 3 = 15 cm. The area of the rectangle is: Area = length × breadth = 9 × 15 = 135 cm². Correct answer: b. 135 cm²
Which one of the following physical quantities is the same for molecules of all gases at a given temperature?
The joint where the neck joins the head is known as which of the following?
Which of the following pairs of vector and disease is/are correctly matched?
Vector Disease
- Anopheles — Malaria...
Which of the following pair is correct?
I. Opaque – do not allow light to pass through them
II. Translucent – allow light to pass...
Kindly Study the following questions carefully and choose the right answer.
In plants, the carbohydrates which are not used immediately are sto...
Alternating current is converted into direct current by a –
What is the name of China's recently launched largest amphibious assault vessel?
What is the primary cause of tides on Earth?
The final image in a simple microscope is –
What is the work to be done to increase the velocity of a car from 30 km h⁻¹ to 60 km h⁻¹ if the mass of the car is 1500 kg?
Relevant for Exams:
