১২৬৭১
The distance from the centre of a circle of radius 5 cm to a chord of lengh 8 cm is-
উত্তর
3 cm
১২৬৭৩
If the radius of a sphere is increased by 10%, how much will the surface area be increased in percentage?
উত্তর
21%
১২৬৮০
In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. What percent of the poor population are illiterate?
উত্তর
60