Related InterviewSolutions

• Curved surface area of a hemisphere is equal to 2772 cm^2, what is its volume? (Take π = \(\frac{22}{7}\))(a) 19464 cm^3(b) 19404 cm^3(c) 19427 cm^3(d) 19425 cm^3The question was asked during an internship interview.This interesting question is from Volume of a Sphere topic in chapter Surface Areas and Volumes of Mathematics – Class 9
• Volume of a hemisphere of radius r is equal to __________(a) \(\frac{4}{3} πr^3\)(b) πr^2h(c) \(\frac{1}{3}\) πr^2h(d) \(\frac{2}{3} πr^3\)I got this question in my homework.Query is from Volume of a Sphere topic in portion Surface Areas and Volumes of Mathematics – Class 9
• What is the volume of a cone having radius of 21cm and height of 5cm?(a) 2310cm^3(b) 2500cm^3(c) 6930cm^3(d) 7500cm^3This question was posed to me in an internship interview.I'd like to ask this question from Volume of a Right Circular Cone topic in chapter Surface Areas and Volumes of Mathematics – Class 9
• A water is flowing through the tap at the rate of 50 cm^3/s. What is the time requires to fill the container of dimensions 20cm * 10cm * 10cm?(a) 40 seconds(b) 30 seconds(c) 45 seconds(d) 50 secondsThis question was addressed to me in an interview for job.Query is from Volume of a Cuboid in chapter Surface Areas and Volumes of Mathematics – Class 9
• Volume of a cube of sides equal to l is given by __________(a) l * b * h(b) l^3(c) l^2(d) π * l * b * hThe question was posed to me in my homework.I'd like to ask this question from Volume of a Cuboid topic in chapter Surface Areas and Volumes of Mathematics – Class 9
• A water tank of dimensions 2m * 3m * 1.5m is to be painted leaving its base. Find the total cost of painting the tank if rate of painting = ₹20/m^2.(a) ₹540(b) ₹500(c) ₹420(d) ₹400This question was addressed to me during a job interview.My doubt is from Surface Area of a Cuboid and a Cube in chapter Surface Areas and Volumes of Mathematics – Class 9
• A hollow sphere of outer radius of 4 cm and thickness of 3 cm is to be made from metal. What is the total amount of metal required (in cm^3) to make the sphere? (Take π = \(\frac{22}{7}\))(a) 281(b) 264(c) 225(d) 227The question was posed to me during an online interview.I want to ask this question from Volume of a Sphere topic in portion Surface Areas and Volumes of Mathematics – Class 9
• Ratio of volume of a cone to the volume of a cylinder for same base radius and same height is __________(a) 3(b) \(\frac{1}{3}\)(c) 2(d) \(\frac{1}{2}\)The question was posed to me during an online exam.Origin of the question is Volume of a Right Circular Cone topic in portion Surface Areas and Volumes of Mathematics – Class 9
• A water well has a height of 8m and diameter of 3.5m. What is the cost of plastering its curved surface and base at the rate of ₹50/m^2? (Take π = \(\frac{22}{7}\))(a) ₹15000(b) ₹14500(c) ₹14000(d) ₹14700I have been asked this question during an online interview.My question comes from Surface Area of a Right Circular Cylinder topic in chapter Surface Areas and Volumes of Mathematics – Class 9
• A cube of side equal to 20 cm is open from the top. Its total surface area is __________ cm^2.(a) 2000(b) 2400(c) 2500(d) 8000The question was posed to me by my school principal while I was bunking the class.Query is from Surface Areas and Volumes topic in section Surface Areas and Volumes of Mathematics – Class 9