The volume of a cube is 21952 cm 3 in which a maximum possible size of circle is drawn on each face. The circle drawn on each face of the cube is painted by pink colour at the rate of Rs. 12.5 per cm 2 and the remaining part of the cube is painted by the red colour at the rate of Rs. ‘y’ per cm 2 . If the total cost of painting the entire cube is Rs. 64848, then find out the value of ‘y’.
The volume of a cube is 21952 cm3 . (Length of each side of cube)3 = 21952 Length of each side of cube = 28 cm A maximum possible size of circle is drawn on each face of the cube. Then the diameter of the circle is equal to the length of each side of the cube. diameter of the circle = 28 cm Radius of circle = 28/2 = 14 cm The circle drawn on each face of the cube is painted by pink colour at the rate of Rs. 12.5 per cm2 and the remaining part of the cube is painted by the red colour at the rate of Rs. ‘y’ per cm2. If the total cost of painting the entire cube is Rs. 64848. cost of painting each side of cube = 64848/6 = Rs. 10808 [12.5 x (22/7) x (radius)2] + [y x [28x28-[(22/7) x (radius)2]]] = 10808 Put the radius in the above equation. [12.5 x (22/7) x (14)2] + [y x [28 x 28-[(22/7) x (14)2]]] = 10808 [12.5 x (22/7) x 196] + [y x [784-[(22/7) x 196]]] = 10808 [12.5 x 616] + [y x [784-616]] = 10808 7700 + y x 168 = 10808 168y = 10808-7700 168y = 3108 Value of ‘y’ = 18.5
Consider the following statements with regard to state reorganisation committees in India.
1. The JVP committee rejected language as the basis ...
A person spent 12.5% of his monthly income on food and 32% of the remaining on rent. If amount spent on rent is Rs 1512, then find the amount spent on f...
Who among the following Indians established the 1st school for women in India ?
There has been a persistent deficit budget year after year. Which action/actions of following can be taken by the Government to reduce the def...
For how many years has the Central Government initiated the National Quantum Mission, starting in April 2023?
Who among the following is responsible for the formulation of the “Internal Complaint Committee” under the Protection of Women from Sexual Harassmen...
Tuluva Narasa who ruled the Vijaynagara Empire for the period 1491- 1503 belonged to which dynasty?
Which one of the following statements regarding force is correct?
The average weight of a group of five persons, A, B, C, D, and E is 66 kg. If another person K joins the group then the average weight of the group is d...
Ratio of length to width of a rectangular field is 8:3. If the perimeter of the field is 330 metres, then find the area (in m2) of the field.