Question
A circular wire of diameter 70 cm is folded in the shape
of a rectangle whose sides are in the ratio 3:2. Find the area enclosed by the rectangle.Solution
Using the formula, Area = lb & D = 2r and A = πr² Radius of circular wire = 70/2 = 35 cm Circumference of wire = 2πr = 2 x (22/7) x 35 = 220 cm Let the length and breadth of rectangle be 3x & 2x cm respectively. Therefore, perimeter of rectangle = 2(3x + 2x) = 10x According to the question, 10x = 220 ⇒ x = 220/10 = 22 Therefore, length of rectangle = 3x = 3 x 22 = 66 cm Breadth of rectangle = 2x = 2 x 22 = 44 cm Area = 66 x 44 = 2904 cm²
Which programming language is commonly used for developing artificial intelligence and machine learning applications?
Speed of light is about __________.
_____________ electrical static device is used to move the electric face signals or frequency from the primary circuit to the second circuit.
Which type of radiation has very short (
In the Australian Open 2022, which player emerged as the winner?
Kiranjeet Kaur has been banned for 4 years by World Athletics anti doping agency. She is related which sport?
By which year will India launch its first orbiter mission to Venus?
Changu is the dance of which state ?
In 1960, Olympics Milkha Singh participated and represented India, where did the Olympics held in that year?
India's first Heli-Taxi service was launched in: