Q: Three solid metallic sphere whose radii are 3cm, x cm and 18cm resp – McqOptions

MCQOPTIONS

1.	Q: Three solid metallic sphere whose radii are 3cm, x cm and 18cm respectively, are melted and recast into a single solid sphere of diameter 38cm. Then find the total surface area of the sphere with radius x cm?
A.	300 π
B.	400 π
C.	100 π
D.	200 π
Answer» C. 100 π

Discussion

No Comment Found

Related MCQs

Q: Who has the highest total marks?
Q: With a 5 % discount on the cost of sugar, a buyer could purchase 2 kg. more sugar for ₹ 608. Original selling price of sugar is.
Q: With the increase in the price of sugar by 45%, a consumer can buy 9 kg less sugar for Rs. 1740. What is the increased price per kg of sugar?
Q: Working 8 hours a day, Sohan writes a book in 18 days. How many hours per day should he write to write the entire book in 12 days?
Q: (x+2y) (x2 + 4y2 – 2xy) equal to-
Q: $$ {x+{1\over{x}}}$$, then the value of $$ {x^2}+{1\over{x^2}}$$ is
Q: $$ {x^{8}+4\over{x^{4}+2x^{2}+2}}$$ is equal to
Q: X and Y are centres of circles of radius 9 cm. and 2 cm respectively XY=17 cm. Z is the centre of a circle of radius r cm which touches the above circles externally. Given that - ∠xzy = 90o the value of r is -
Q: X= Average of plastic bats manufactured by V, U and T.Y=Wooden bats of Brand A manufactured by V.What is the value X – Y?
Q: X can do a certain work in the same time in which Y and R together can do it. If X and Y together could do it in the same time as that of Q then Y alone could do it in: