Question
The base of a triangular plot is 25 meters, and its
height is 30 meters. If a path of 2 meters wide is to be built around the plot, what will be the area of the path?Solution
Area of the triangle = (1/2) * 25 * 30 = 375 square meters. New base after adding the path = 25 + 2 + 2 = 29 meters. New height after adding the path = 30 + 2 + 2 = 34 meters. New area of the triangle = (1/2) * 29 * 34 = 493 square meters. Area of the path = 493 - 375 = 118 square meters.
Two different alloys contain steel and aluminum in the ratios of 11:4 and 2:13, respectively. In what proportion should these two alloys be combined to ...
The sum to n terms of the series 1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 7 …………………… is
If a, b, c are in geometric progression and a + b + c = 14, a² + b² + c² = 84, find a, b, c.
The current age of Anupama is 25% greater than Chinky's age. Four years ago, the ages of Beena and Chinky were in the ratio of 4:...
3600, 600, 120, 30, 10, ?
The first odd number is 1, second is 3, third is 5 and fourth is 7 and so on, then find the 188th odd number?
If the median and mode of a data set are 6 and 12 respectively, then find the mean of the data.
What is least number which when successively divided by 6, 4 and 4 leaves a remainder 5, 3 and 3 respectively?
The sum of total surface area of two cubes is 1248-centimeter square. If the product of the length of their edges is 96 centimeter square. Find the diff...
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 20 minutes and 15 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If a...
Relevant for Exams:
