Question
The speed of a boat in still water is 9 km/hr and speed
of current is 5 km/hr. If time taken to cover a certain distance upstream is 14 hours, then how long will the boat take to cover the same distance downstream?Solution
Total distance = 14 × (9 – 5) = 56 km Required time = 56/(9 + 5) = 4 hrs
Find the number of sides in a regular polygon if its each interior angle is 160°.
A polygon has 44 diagonals. How many sides does this polygon have?
The ratio between the number of sides of two regular polygons is 1 : 2 and the ratio between their interior angle is 2 : 3, the number of sides of these...
Find the number of sides of regular polygon. If the ratio of interior angles and exterior angles are 3:2.
When each internal angle of a regular polygon measures as 144°. Determine the number of sides in the polygon.
A regular polygon with 'x' sides has 54 diagonals, while another regular polygon with 'y' sides has 90 diagonals. Determine the sum of 'x' and 'y'.
The external angle of a regular polygon is 82°. Find the internal angle.
Difference between the interior and exterior angles of regular polygon is 60°. How many sides are there in the polygon?
The sum of interior angles of a regular polygon is 1260°. Find the number of diagonals.
