Question

from a square cardboard of side 21 cm, a circle if maximum area is cut out find the area of cardboard left

Answer 1

side of car body equals to 21 centimetre and the maximum radius of circle would be 21 / 2 cm so area of circle equals to 22 by 7 x 22 divided by 2 whole square by which we will get 346 point 185 CM square and area of square equals to 21 into 21 equals to 441 CM square by subtracting both areas we will get 94.815 CM square