MCQ on surface areas and volumes

1- A rectangular water tank is 8 in high, 6 m long and 2.5 in wide. How many litres of water can it hold?
(A) 120 litres
(B) 1200 litres
(C) 12000 litres
(D) 120000 litres
2-What would be the measure of the diagonal of a square whose area is equal to 882 cm² ?
(A) 34 m
(B) 36 m
(C) 42 m
(D) 46 m
3-In circular path, the radii of 2 concentric circles are 56 m and 49 m. Find the area of the circular path.
(A) 2020 m²
(B) 2310 m²
(C) 3010 m²
(D) 3200 m²
4-A playground 60 m x 40 m is extended on all sides by 3 m. What is the extended area?
(A) 336 m²
(B) 636 m²
(C) 628 m²
(D) 616 m²
5-The lateral surface area and total surface area of the cube having side 24 cm are respectively.
(A) 3004 cm², 4256 cm²
(B) 4204 cm², 6556 cm²
(C) 2304 cm², 3456 cm²
(D) 3040 cm², 5456 cm²
6-If the length, breadth and height of a rectangular box are 90 cm, 50 cm and 100 cm respectively, then its volume will be
(A) 0.35 m³
(B) 0.45 m³
(C) 45 cm³
(D) 450 cm³
7-The volume of a solid right circular cone is 4928 cm³. If its height is 24 cm then the radius of the cone is (Use π = 22/7)
(A) 14 cm
(B) 21 cm
(C) 28 cm
(D) 48 cm
8-Curved surface area of frustum of a cone is
(A) 2πr²h sq. units
(B) 2πrh sq. units
(C) πrl sq. units
(D) π(R+r)l sq. units
9-The area of a sector of a circle of radius 21 cm is 231 cm². Find its central angle
(A) 30°
(B) 45°
(C) 60°
(D) 90°
10-If the volumes of two cones are in the ratio 1:4 and their diameters are in the ratio 4:5 then the ratio of their heights is
(A) 1:5
(B) 1:4
(C) 9:16
(D) 25:64
ANSWERS:
1-(D), 2-(C), 3-(B), 4-(B), 5-(C), 6-(B), 7-(A), 8-(D), 9-(C), 10-(D)