*How many bricks of 30 cm long, 15 cm thick and 10 cm wide bricks will

1.	How many bricks of 30 cm long, 15 cm thick and 10 cm wide bricks will be enough to build a wall 24 m long, 50 cm wide and 3 m high?
Answer» Answer: 8000 bricks are needed to build the WALL. Step-by-step explanation: Given that: A brick is 30 cm long, 15 cm thick and 10 cm wide. A wall is to be build 24 m long, 50 cm wide and 3 m high. To Find: How MANY bricks will be needed to build the wall? Formula Used: Volume of a cuboid = (L × B × H) cubic units Where, L = Length of the cuboid B = Breadth of the cuboid H = Height of the cuboid Solution: CALCULATING volume of the wall: $\sf{\longmapsto(Length\times Breadth\times Height)}$ $\sf{\longmapsto(24m\times50cm\times3m)}$ $\sf{\longmapsto(2400cm\times50cm\times300cm)}$ $\sf{\longmapsto3,60,00,000}$ Hence, Volume of the wall = 3,60,00,000 cm³ Calculating volume of the brick: $\sf{\longmapsto(Length\times Breadth\times Height)}$ $\sf{\longmapsto(30cm\times15cm\times10cm)}$ $\sf{\longmapsto4,500}$ Hence, Volume of the brick = 4500 cm³ Finding number of bricks required to build the wall: $\sf{\longmapsto \dfrac{Volume\;of \;the\;wall}{Volume\;of\;the\;brick}}$ $\sf{\longmapsto \dfrac{3,60,00,000}{4500}}$ Cutting off the zeros, $\sf{\longmapsto \dfrac{3,60,00,0\!\!\!\not{0}\!\!\!\not{0}}{45\!\!\!\not{0}\!\!\!\not{0}}}$ $\sf{\longmapsto \dfrac{3,60,000}{45}}$ Dividing the numbers, $\sf{\longmapsto 8000}$ Hence, 8000 bricks are needed to build the wall.