If ratio of interior & exterior angle of a regular polygon is 5:3, then number of sides of the polygon is
We know that I + E = 180 & I :E = 5:3 Let I = 5k & E = 3k So 5k + 3k = 180 or 8k =180 or k = 22.5 ; It means exterior angle = 22.5 = 360/N or N = 360/22.5 = 16
If x1 and x2 are the roots of the equation 2x2 + 3x – 9 = 0, then the equation which has the roots 1/x1 and1/x2 is:
Ratio of length to width of a rectangular field is 2:3. If the perimeter of the field is 380 metres, then find the area (in m2) of the field.
The perimeter of a rectangle is 300m. If the difference between the length and breadth of the rectangle is 10m, then what is the circumference of the l...
How many spherical bullets can be made out of a lead cylinder 45 cm high and 27 cm radius, each bullet being 3 cm in diameter?
Perimeter of a square and circumference of a circle are in the ratio 8:11, respectively. If area of the square is 64 cm2, then find the radiu...
The radius of the two cylinders is in the ratio of 1: 4 and their heights are in the ratio of 4: 3. Their volumes will be in the ratio.
The perimeter of 3 squares is 28 cm, 36 cm and 48 cm respectively. What will be the area of the square having perimeter equal to sum of edges of 3 squar...
The length, breadth and height of a room are 8m, 10m and 12m respectively. Find the cost of white washing the room at the rate of Rs 15 per m²?
The length of a rectangle, area of which is 168 cm2, is equal to the radius of a circle of area 616 cm2. Find the perimeter of the...
A diagonal of a rhombus is 6 cm. If its area is 24 cm, then the length of each side of the rhombus is?
