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NetherisIsTheQueen
20.09.2020 •
Mathematics
A community hall is in the shape of a cuboid the hall is 40 m long, 15m wide and 3m high the community hall needs re decorating with new paint for the walls and ceiling and new tiles on the floor a 10l tin of paint covers 25m^2 and costs £10 1m^2 floor tiles cost £3 each work out the total cost of paint and tiles needed to re decorate the community hall
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Ответ:
The total cost of to re-decorate the community hall is £2172.
Step-by-step explanation:
We have been given that a community hall is in the shape of a cuboid. The hall is 40m long 15m wide and 3m high.
The paint will be required for 4 walls and ceiling.
Let us find area of walls and ceiling.
Are of Walls and Ceiling =![2(l+b)h+lb=2(40+15)3+(40\times15)= 6\times55+600= 330+600 =930m^2](/tpl/images/0395/5393/15b70.png)
Therefore, the area of walls and ceiling is 930 square meters.
Given: Cost for 10 litre of paint is £10 and 10 litre paint covers 25 square meter. Therefore,
Total Painting cost =![10 \times \frac{930}{25} = \£372](/tpl/images/0395/5393/8baed.png)
Therefore, the total painting cost of wall is £372.
Tiles will be required for floor. Let us find the area of floor.
Area of floor =![l \times b = 40\times15 =600m^2](/tpl/images/0395/5393/84139.png)
Given: 1m squared floor tiles costs £3. So,
Total Cost for tiles =![3\times600= \£1800](/tpl/images/0395/5393/f5dc0.png)
Therefore, the total cost for tiles is £1800.
Now let us find total cost of to re-decorate the community hall;
Total Cost = the total painting cost of wall + the total cost for tiles =![\£1800+\£372= \£2172](/tpl/images/0395/5393/4c4bb.png)
Hence, the total cost of to re-decorate the community hall £2172.
Ответ: