Question
What are the respiratory organs of
insects?Solution
Insects breathe through a network of tubes called tracheae, which deliver oxygen directly to their tissues.
The cost of fencing a rectangular field at the rate of Rs. 7/metre is Rs. 350. If the length of the field is 11 metres more than its breadth, then find ...
The base of the triangular area is two times its height. If the cost of farming area is Rs. 2000 and Rs. 80 per hectare. Find its base (1 hectare = ...
Length and breadth of a rectangular room are in the ratio 4 ∶ 5. The perimeter of the room is 180 m. Cost of flooring is Rs. 75 per square metre. Find...
A right circular cylindrical tank of radius 'R' meter and height 'R + 7' meter contains oil. The entire quantity of oil is taken out from the cylindric...
The area of the rectangular field is 720 m² and its perimeter is 106 m. Find how much percent less the breadth of the field is compared to the length o...
Lateral surface area of a cube is 420 cm2 less than the lateral surface area of a cylinder. Height of cylinder is 2R cm and radius is R cm. I...
If the area of a square field is 676 m2, then find the diagonal of the square field.
The radius of a sphere is 75% of the radius of a cylinder, while the height of the cylinder is 25% greater than its radius. Determine the ratio of the v...
A cube of maximum possible volume is cut from a sphere of radius 5√3 cm. What is the ratio of the volume of a cube to that of the sphere?
The volume of a cube is 2744 cm 3 in which a maximum possible size of circle is drawn on each face. The circle drawn on each face of the ...