The Provincial Disaster and Risk Reduction Management Committee (PDRRMC) advised the residents[br]living within the 10 km radius critical area to evacuate due to eminent[br]eruption of a volcano. On the map that is drawn on a coordinate plane, the[br]coordinates corresponding to the location of the volcano is (3, 4).[br][br][br]Illustrate the location of the volcano and the critical area using the Geogebra Applet below.[br]
1. If each unit on the coordinate plane is equivalent to 1 km, what is the standard[br]form and general equation of the circle enclosing the critical area? [br][br]
2. Suppose you live at point (11, 6), how far is this from the center or the volcano? Would[br]you follow the advice of the PDRRMC? Why?[br][br]
3. In times of eminent disaster, what precautionary measures should you take to be[br]safe?[br][br]
The Provincial Disaster and Risk Reduction Management Committee (PDRRMC) advised the residents[br]living within the 10 km radius critical area to evacuate due to eminent[br]eruption of a volcano. On the map that is drawn on a coordinate plane, the[br]coordinates corresponding to the location of the volcano is (3, 4).[br][br][br]Illustrate the location of the volcano and the critical area using the Geogebra Applet below.[br]
Cellular phone networks use towers to transmit calls to a circular area. On a grid of a province, the coordinates that correspond to the location of the towers and the radius each covers are as follows: Wise Tower is at (–5, –3) and covers a 9 km radius; Global Tower is at (3, 6) and covers a 4 km radius; and Star Tower is at (12, –3) and covers a 6 km radius. [br][br]
1. What equation represents the transmission boundaries of each tower?
2. Which tower transmits calls to phones located at (12, 2)? (–6, –7)? (2, 8)? (1, 3)? [br][br]
3. If you were a cellular phone user, which cellular phone network will you subscribe to? Why?