Question
A report on the 2021 Human Development Index (HDI)Â is
part of the Human Development Report 2021-2022 released by the United Nations Development Programme. The HDI measures the average achievement of a country on the basis of human development. What is India’s rank in the 2021 Human Development Index?Solution
India ranked 132nd among 191 countries and territories on the 2021 Human Development Index (HDI). In the 2020 report, India had ranked 131st among 189 countries and territories. The decline in the country’s performance from its previous level was on account of a fall in life expectancy.
In triangle ABC, the difference between angle A and angle B is 16°, and the difference between angle A and angle C is 8°. Determine the measure of an...
Find area of a trapezium with parallel sides 12 cm and 18 cm, height 10 cm.
- The sides of two similar triangles are in the ratio 5:7. The areas of these triangles are in the ratio:
If each side of an equilateral triangle is 12 cm, then its altitude is equal to:
- The sides of a triangle are in the ratio 7:24:25. If the area of the triangle is 336 cm², what is the perimeter of the triangle?
In â–³ ABC, D and E are the points on sides AB and AC. respectively and DE | BC. BC = 8 cm and DE = 5 cm. If the area of â–³ ADE = 45 cm², then wha...
Find the inradius of an equilateral triangle whose altitude is 9√3 cm.
- If the perpendicular from a vertex of an equilateral triangle to the opposite side is 15√3 cm, find its inradius.
What is the height of an equilateral triangle if each of its sides is 4√3 cm?
The corresponding medians of two similar triangles are 12 cm and 15 cm. If the area of the first triangle is 288 cm, then find the area of the second tr...