Question
The circular field has a perimeter (circumference) of
264 meters. Calculate the area of the field. {Take π = (22/7)}Solution
Let the radius of the circular field = 'r' metres Then, circumference of the field = 2 X π X r = 2 X (22/7) X r Or, (44r/7) = 264 So, r = (264 X 7) ÷ 44 = 42 So, area of the field = π X r2 = (22/7) X 422 = 5544 cm2
The total surface area of a square-based right pyramid is 1536 m², of which 37.5% is the area of the base of the pyramid. What is the volume (in mᶟ) ...
The volume of cone is 1320 cm3. If its height is 1.4 cm then find the radius of the cone.
At the end of a business conference the ten people present all shake hands with each other once. How many handshakes will there be altogether?
2[sin x – cos x]4 + 6[sin x + cos x]2 + 5[sin6 x + cos6 x]= ?
A bus passes two bridges of length 500 m and 325 m in 90 seconds and 60 seconds respectively. The length (in m) of the bus is
If the curved surface area and the radius of a cylinder are 550 cm2 and 7 cm, respectively, then find the volume (in cm3) of the c...
The circumference of a square and the circumference of a cube are equal. The numerical value of the total surface area of the cube is 25 times the perim...
The volume and height of a cylinder are 7986 cm3 and 21 cm. Find the radius of the cylinder.
The ratio of length to breadth of a rectangle is 8:5. When the length and breadth of the rectangle is increased by 22% and decreased by 30% respectively...
AB is the diameter of a circle with center o. P is the point on it If the cone ∠AOP is equal to 98 degrees then ∠OBP will be.