Trying to find the right answer to this..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Surface Areas and Volumes

Short Answer Type

121.

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will fall into the sea in a minute?

93 Views

122. An underground water tank is in the form of a cuboid of edges 48 m, 36 m and 28 m. Find the volume of the tank.

123 Views

123. The areas of three adjacent faces of a cuboid are p, q and r. If its volume is v, prove that v² = pqr.

225 Views

124. Three cubes of edge 12 cm are joined together (end to end). Find the volume of the resulting cuboid.

314 Views

125. A box with lid is made out of 2 cm thick wood. Its external length, breadth and height are 25 cm, 18 cm and 15 cm respectively. Find the capacity of the box and volume of the wood used.

220 Views

126. A rectangular metallic sheet has dimensions 48 cm x 36 cm. From each of its comers, a square of side 8 cm is cut off and an open box is made from the remaining sheet, find the volume of the box.

For open box
Length (l) = 48 – (8 + 8) = 32 cm Breadth (b) = 36 – (8 + 8) = 20 cm Height (h) = 8 cm
∴ Volume of the box = Ibh
= 32 x 20 x 8 = 5120 cm³

120 Views

127.

A cubical box has each edge of length 10 cm and another cuboidal box is 12.5 cm long, 10 cm wide and 8 cm high. Find the volume of the box which has greater lateral surface area.

137 Views