Question
A cuboid has dimensions 12 cm × 8 cm × 6 cm. If a
cylindrical hole of diameter 4 cm is drilled through the entire length of the cuboid, what is the volume of the remaining solid? (Ï€ = 3.14)Solution
Volume of the cuboid = l × b × h = 12 × 8 × 6 = 576 cm³. Volume of the cylindrical hole = π * r² * h Where diameter = 4 cm, so radius r = 2 cm and height h = 12 cm: Volume of the hole = π * (2²) * 12 = π * 4 * 12 = 48π cm³. Remaining volume = Volume of cuboid - Volume of hole = 576 - 48π. Using π = 3.14 Remaining volume = 576 - 150.72 = 425.28 cm³. Correct option: b) 425.28 cm³
In the given Figure, Find  angle BCD. If AB is a diameter & AB is parallel to CD.
What will be circumradius of a right angle triangle whose base is 20cm & height is 21cm ?
If y = 5x + c passes through point A(5, 2), what is the value of c?
...If in a right angle triangle ABC, Angle B is a right angle. AB = 8 cm, BC= 15cm if BD is perpendicular to AC find the length of BD?Â
The perimeter of a rectangle is 100 m, and its diagonal is 41 m. Find the area of the rectangle.
Find the area of triangle having sides 20 m, 21 m, and 29 m.
The radius of a circle is 25 cm, and the length of the chord is 14 cm. Find the distance between the chord and the centre of the circle. Â
The length of the each side of an equilateral triangle is 28√3. The area of incircle, (cm 2 ) is
The ratio of curved surface area of a right circular cylinder to the total area of its two bases is 2 : 1. If the total surface area of cylinder is 2310...
