A 15m tall pillar consists of two parts. The diameters of the base at the bottom and the top-most circular disc are in the ratio 4:3. If the total area of the curved surfaces of both the parts of...
A 15m tall pillar consists of two parts. The diameters of the base at the bottom and the top-most circular disc are in the ratio 4:3. If the total area of the curved surfaces of both the parts of...
A) How far does it roll along the ground in on turn( correct to one decimal place)? b) If the diameter were 100 cm, how much further would it have rolled? C) If the diameter...
In a circle , AB=AC are two chords. If ∠BOC= 120°, find ∠BAC, ∠ABO and ∠ACO
In a circle, AB=AC. If ∠BOC=120°. Find BAC, ABO and ACO.
A 24cm long chord is 5cm away from the centre of a circle, find the length of a diameter of the circle.
A circular was made for John's birthday. John cut it into 22 equal pieces. If the top surface of each cake was 28cm2. Find the circumference of the cake.
In a circle two chords are given which parallel.Mid point of AB is M and that of CD is N AB=12 cm , CD=16cm and OM=8 cm .Find ON.
A circular garden of radius 140m has a circular footpath 7m along its outer edge. Find the length of iron fencing needed to cover the outer edge of the footpath.
Students of a class were when asked to make cones from sheets of paper, cones made by I and J had ratio of the curved surface areas equal to 3:4. If the slanting heights of both the cones were equal,...
A cylinder well has 14 cm thick wall and its depth is 20 m. If the diameter of the outer circle of the wall is 3.08m. Find the area of its inner curved surface.
Approximate the area under the curve f(x)= 4x2+1 on the interval [2,5] using 4 rectangles of equal width. Get the heights from the right-hand sides.
A 15m tall pillar consists of two parts. The diameters of the base at the bottom and the top-most circular disc are in the ratio 4:3. If the total area of the curved surfaces of both the parts of...
A tunnel was constructed for the metro-railway and any cross-section of the inside curved is a semi-circle with a diameter 8m. If the cost of painting the inside curved surface of the tunnel is $1,000...
A closed cylindrical vessel of length 20 cm and diameter 10.5 cm is to be made from a light metal sheet. What is the total area of the sheet required for it?
The diameter of the base of a right circular cylinder is 18.2 cm and the ratio of the area of its curved surface to the area of the base is 15:13. Find the total surface area of the cylinder?
320 numbers of steel pipes, each of outer diameter 1.4m were used in laying a pipe-line from an oil collecting station to an oil Refinery. If the area of the outer curved surface of a pipe is 66m2...
To level the top of the school play ground for the animal sports a hand-drawn roller of diameter 56cm was engaged. A group of students involved in the job found that after making 10 continuous rounds...
Had the diameter of a sphere been decreased by 2cm, its surface area would have diminished by 113.04 cm2 . Find the surface area of the sphere.
A 10m long iron pipe has a thickness of its wall of 3.5cm and its inside diameter is 15.4cm. Find the cost of painting its outside surface at the rate of 140 per m2. Urgently required...
if the total surface area is 628cm2 and slant height is 17cm find radius