9. the polygons are similar but not necessarily drawn to scale.162 81 9419. the length of the hypotenuse of a 30° -60° -90° is 7. find the perimeter. 21. what are the ratios for sin a and cos a? 23. what is the area of the figure? 31. what is the area in terms of pi? 33. use formulas to find the lateral area and surface area of the given prism. round your answer to the nearest whole number. 46. in the figure, mde=106° and mbc =62°. what is m of angle a? 48. what is the standard equation of the circle in the graph? 49. what is the equation of the circle with centre (-4, -3) that passes through point (6, 2)?

battery with hi vtge high val resist in series

double the distance = divide strength by 4

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

hope this