Question
Find the volume of a frustum of a cone with a height of
9 cm, the radius of the upper base as 4 cm, and the radius of the lower base as 6 cm. (Use π = 3.14)Solution
Volume of frustum = (1/3)πh(r1² + r2² + r1r2) = (1/3) × 3.14 × 9 × (4² + 6² + 4 × 6) = (1/3) × 3.14 × 9 × (16 + 36 + 24) = (1/3) × 3.14 × 9 × 76 = 715.9 cm³.
What is the maximum number of rectangles in the given figure?
How many triangles are there in the given figure?
Rekha starts from her house and goes 3 km straight. Then she turns towards her left and goes 1 km. She again turns towards her left and goes 2 km. If sh...
statement:
Residents of this region are frequently faced with incidents of sudden power surges and voltage surges which cause damage to sensitive...
Three statements are given, followed by three conclusions numbered I, II and III.
Assuming the statements to be true, even if they seem to be a...
In this question, three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they see...
Four pairs of letter-clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different.
In the following question, select the missing number from the given series.
?, 3, 5, 7, 11, 13
Select the option that is related to the third word in the same way as the second word is related to the first word.
Lazy : Hard-working : : Wealthy : ?
