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• Cork (outer bark of trees) is water-resistant due to the presence of suberin, a hydrophobic (water-repelling) substance. • Lignin provides rigidity but does not make cork water-resistant. • Pectin and Hemicellulose are part of the plant cell wall but do not contribute to water resistance.
Find out the circumference of a sector whose radius is 7 cm and it makes the angle of 45° at the centre.
The circumference of the circle is 198 cm while the length of the rectangle is 12 cm more than the radius of the circle. Find the perimeter of the recta...
A metal wire when bent in the form of a square encloses an area 1089 cm 2 , if the same wire is bent in the form of a circle, then its area is?
Find the area of largest square that can be inscribed in a circle of radius ‘r’.
The area of a sector of a circle is 88cm² and the angle of the sector is 60º. Find the radius of the circle.
A sector of a circle has a central angle of 60°. If the radius of the circle is 14 cm, what is the area of the sector?
What is the perimeter of the square inscribed in a circle of radius 6 cm.
If a wheel covers a distance of 660 m in 30 rotations, then the diameter of the wheel is?
