An aeroplane flys around squares whose all sides are of length `100` miles. If the aeroplane covers at a speed of `100 mph` the first side, `200 mph` the second side `300 mph` the third side and `400 mph` the fourth side. The average speed of aeroplane around the square is
A car is moving at a constant speed of 40 km/h along a straight road which heads towards a large vertical wall and makes a sharp 90^0 turn by the side of the wall. A fly flyingat constant speed of 100 km/h, starts from the wall towrds the car t an instant when the car is 20 km away,flies until it reaches the glasspane of the car and returns to teh wll at teh same speed. It continues to fly between the car and teh wall time the car makes the 90^0 turn. a. What is the total distance the fly has travelled during the period?b. How many trips has it made between the car and the wall?
A rectangular sheet of fixed perimeter with sides having their lengths in the ratio 8: 15 is converted into anopen rectangular box by folding after removing squares of equal area from all four corners. If the total area of removed squares is 100, the resulting box has maximum volume. Then the length of the sides of the rectangular sheet are 24 (b) 32 (c) 45 (d) 60
CENGAGE-PROGRESSION AND SERIES-ARCHIVES (MATRIX MATCH TYPE )
