20 m 2. Se necesita pasar un espejo cuadrado de 210cm de lado por una puerta que mide 84cmde
ancho ¿Cuánto debe tener de alto la puerta para que pase el espejo de
forma diagonal?
3. Un barco suelta su ancla en un punto Q y se desplaza 20m hacia el oeste
como se muestra en la figura. Si la cuerda que sostiene el ancla es de
40m, ¿cuál es la distancia ente la superficie y donde se encuentra el ancla?​

step-by-step explanation:

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answer:

total cost for tiles and paints is $924.  

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 high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.

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