Guidelines

How do you find the area of a roller?

How do you find the area of a roller?

The formula for finding the lateral area of a right circular cylinder is: \[\text{L=}2\pi rh…… (1)\] where L is the lateral surface area of the cylinder, r is the radius of the cylinder and h is the cylinder’s height.

What is the shape of a garden roller?

Answer: The garden roller is in the shape of a right circular cylinder.

What is the diameter of a roller?

The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground.

How much area does the roller cover in one full revolution?

4.4 square meters
So, r = 702=35 cm= 0.35 m (As radius is half of the diameter.) Thus the area covered by the roller in one revolution will be 4.4 square meters.

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What is the curved surface area of cylinder?

2πrh
The 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.

How do you find the TSA of a cylinder?

The formula to calculate the total surface area of a cylinder is given as, the total surface area of cylinder = 2πr(h + r), while the curved surface area of cylinder formula is, curved/lateral surface area of cylinder = 2πrh, where ‘r’ is the radius of the base and ‘h’ is the height of the cylinder.

How do you find the area of one revolution?

Its width is its height = 120 cm. It is a cylinder. Therefore its area covered in one revolution is 2 ×3.14×70×120 = 52572 cm².

How do you find the surface area of cylinders?

What is TSA of hollow cylinder?

TSA of cylinder =2πrh+2πr2 which is lateral surface area of cylinder plus area of 2 circles. While in hollow cylinder bases are subtracted from external cylinder and are added to lateral surface area of two cylinder i.e. =2πRh+2πrh+2πR2−2πr2h . Maths.

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