WebCurved Surface Area = 1320 cm 2. Diameter=21cm. We have to find the height and volume of the cylinder. First of all, we have been given the diameter so let us find out the radius. `r = 21/2` cm. We know that, Curved Surface Area = `2pirh` Therefore, `2pirh` =1320 `2 xx 22/7 xx 21/2 xx h = 1320` h = 20 cm WebFeb 12, 2024 · To find the radius, r, of a cylinder from its surface area A, you must also know the cylinder's height, h:. Substitute the height h into the surface area of a cylinder equation, A = 2πr² + 2πrh.; Bring all terms in this equation to one side to get 2πr² + 2πrh - A = 0.Note that this is a quadratic equation in terms of r.; Solve this equation using the quadratic …
The curved surface area of a cylinder is 1320 cm2 and its …
WebClick here👆to get an answer to your question ️ The curved surface area of a cylinder is 1320 cm^2 and its base has diameter 21 cm . find the volume of the cylinder. Join / Login. Class 9. Maths. ... Four times the area of the curved surface of a cylinder is equal to 6 time the sum of the area of its bases. If its height is 14 cm, find the ... WebJan 30, 2024 · The curved surface area of a cylinder = 1320 cm²; The volume of the cylinder = 2640 cm³; To find, We have to find the height. Solution, We can simply find the height of … lampada g9 led 3000k
Cylinders - 3-dimensional shapes - Edexcel - BBC Bitesize
WebThe radius ‘r’ of a cylinder is the radius of its base. Now, the area of the rectangle = length × breadth. 2πr is the circumference of the circle and h is the height. Area of the curved surface will be = 2πr × h = 2πrh. So the area of the cylinder will be: 2πr² + 2πrh, or. Total Surface Area of Cylinder = 2πr ( r + h ) WebSo, curved surface area of the cylinder = Area of the rectangular sheet = length × width = perimeter of the base of the cylinder × h = 2rh Example: Find the surface area of a tube of length 8 cm, diameter 14 cm. Diameter = 14 cm So, radius = diameter/2= = 7cm Curved Surface Area = 2 × ×7 ×8 = 352 cm² WebFind the volume of the cylinder. Solution: Total surface area = 231 cm 2 As per given statement: Curved surface area = 2/3 (Total surface area) Curved surface area = 2/3 x 231 = 154 So, Curved surface area = 154 cm 2 … (1) We know, Curved surface area of cylinder = 2πrh + 2πr 2 Or 2πrh + 2πr 2 = 231 ….. (2) lampada g9 led 10w 127v