Question
The height of a right circular cylinder is 12m and also
three times the sum of the areas of its two end faces is equal to twice the area of its curved surface. The radius of its base, in metre is?Solution
Height = 12cm, Area of two end faces of right circular cylinder = (2πr2) Curved surface area of right circular cylinder = 2πrh according to question, 3 x (2πr2) = 2 x (2πrh) 3 x r = 2h r = (2×12)/3 r = 8 m
If ‘%’ means (÷), ‘&’ means (+), ‘$’ means (×), and ‘@’ means (-), then what is the value of the expression:
25 & 35 % 7 @ 14 $...
Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.
16 * 5 * 35 ...
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
65 * 45 * 25 * 5 * 35 * 60
Out of the total number of players, 100/3 % are in hotel X and the remaining are in hotel Y. If 20 players from hotel Y are shifted to hotel X, then the...
Which two signs should be interchanged to make the given equation correct?
8 – 42 + 15 × 20 ÷ 4 = 346
If the following interchanges are made in signs, then what would be the value of the following expression?
48 X 63 + 2 ÷ 9 - 35
Interch...
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
12* 6 * 3 * 54 * 9 * 12
Which of the following mathematical operator are placed in place of alphabet given in the equation to make it true?
54 a 7 c 9 f 45 h 12 j 15
...Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
30 * 4 * 2 * 1 * 121
Select the correct combination of mathematical signs that can sequentially replace the '$' signs and balance the given equation.
6 $ 42 $ 14 $ 6 $ 40 = -16
Relevant for Exams:
