Q) Can any rational value of x make the new area equal to 220 cm2 ? [ Click here for full question] Ans: If by increasing each dimension by x units, the area of the photo is enlarged to 220 cm2, then (18 + x) (12 + x) = 220 ⇒ x2 + 30 x […]
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Q) While designing the school year book, a teacher asked the student that the length and width of a particular photo is increased by x units each to double the area of the photo. The original photo is 18 cm long and 12 cm wide. Based on the above information, answer the following questions: (i)
Q) A room is in the form of cylinder surmounted by a hemi-spherical dome. The base radius of hemisphere is one-half the height of cylindrical part. Fine the total height of the room if it Contains m3 of air. Take Ans: Let h be the height of cylindrical part and r be the radius of
Q) An empty cone is of radius 3 cm and height 12 cm. Ice-cream is filled in it so that lower part of the cone, which is th of volume of the cone, is unfilled but hemisphere is formed on the top. Find volume of the of ice-cream. Ans: VIDEO SOLUTION STEP BY STEP SOLUTION