describe principles and functions of fire alarm
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14
Explanation:
All Fire Alarm Systems essentially operate on the same principle. If a detector detects smoke or heat, or someone operates a break glass unit, then alarm sounders operate to warn others in the building that there may be a fire and to evacuate.
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5
Explanation:
find the diagonal of a quadrilateral whose area is 300 CM square the length of perpendicular from the opposite vertices are 14 cm and 16 cm respectively
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