MCQ on surface areas and volumes

21-Two vessels contain 30 liters and 50 liters of milk separately. What is the capacity of vessels if both share the milk equally.
(A) 30 liters
(B) 40 liters
(C) 50 liters
(D) 60 liters
22-The total surface area of a sphere is 144 π cm³. Find the volume of the sphere.
(A) 36 π cm³
(B) 72 π cm³
(C) 144 π cm³
(D) 288 π cm³
23-The area of a circle is 154 cm². What is the circumference of a circle?
(A) 11 cm
(B) 22 cm
(C) 44 cm
(D) 88 cm
24-The ratio of volumes of two cubes is 8:1 then the ratio of its sides is
(A) 2:1
(B) 3:1
(C) 4:1
(D) 5:1
25-The sum of the length, breadth and depth of a cuboid is 19 cm and its diagonal is 5√5 cm. Its total surface area is
(A) 136 cm²
(B) 236 cm²
(C) 336 cm²
(D) 436 cm²
26-The ratio of heights of two cylinders of equal volumes is 1:3 then the ratio of their radii will be
(A) 1:√3
(B) 2:√3
(C) 3:√3
(D) 4:√3
27-What would be the measure of the diagonal of a square whose area is equal to 882 cm²?
(A) 40 cm
(B) 42 cm
(C) 44 cm
(D) 46 cm
ANSWERS:
21-(B), 22-(D), 23-(C), 24-(A), 25-(B), 26-(C), 27-(B)