What five letter word that is to find an approximate value for a number? it starts with an i really don't understand

Anyone know? will mark brainliest if correct

Draw a scaled copy of the circle using a scale factor of 2

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in