I'm in the 7 grade i need on this math problem. the original a amount is 200 and the new amount is 78 me find the percent i do not under decrease ping percent me.

If you want to find what the percent of 78 out of 200 is then divide 78 by 200 and you'll get .39 which is 39% . Not sure If this is what you were asking though

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )