Question
Find the area of the octagon whose side is 20 cm?
More Mensuration Questions
- Three cubes of equal volume are joined end to end. Find the surface area of the resulting cuboid if the diagonal of the cube is 7√3cm.
- A right triangle ABC with sides 9 cm ,12cm and 15cm is revolved about the side 12 cm. What is the volume of the solid so obtained? (in cm 3 )
- The sum of length, breadth and height of cuboid is 25cm.If the length of the diagonal is 15 cm, then find the total surface area of the cuboid. (in cm 2 )
- A frustum of a cone has a lower base radius of 12 cm, an upper base radius of 8 cm, and a height of 15 cm. Find the total surface area of the frustum.
- If two is added to the denominator of a rational number it becomes 1 and if 4 is added to the numerator it becomes ½. Then the sum of the numerator and the...
- A cylindrical road roller has a diameter of 2.2 metres and a length of 1.75 metres. If it moves with 14 revolutions per minute, how much area does it roll ...
- A cone is cut parallel to its base in 3 parts in such a way that the height of each part is same. Find the ratio of volume of these parts?
- If the volume and radius of a cylinder is 7700 cm3 and 14 cm respectively then find the height of the cylinder?
- If the area of square is 225 cmsup2; and the breadth of rectangle is 20% more and the length is 30% more than the side of the square, then find the the are...
- The length of a rectangle is 4 cm more than the side of a square and the breadth of the rectangle is 4 cm less than the side of the square. If the area of ...
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