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Let number of pens with Sumit, Rohan, Chetan, Dheeraj and Gagan be 2x, 3x, 4x, 5x and 6x respectively. It is clear from the question that Chetan has 40 pens which is 20% of total number of pens Let total number of pens be x. ∴ 20% of x = 40⇒ x = 200 ∴ Rohan has 3/20 × 200 = 30 pens
The angle of depression of the foot of a building from the top of a tower 54√3 m away is 30°. How high is the tower?
If the circumference of a circle is 264 cm then find the area of the circle?
What will be the volume of a cuboid if its length is 17.5 cm, width is 10 cm, and height is 20 cm?
tan(θ -14π) is equal to:
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.