how many plants will be there in a circular bed whose outer edge measure 33 cms , allowing 4 cm 2 for each plant ?
"circumference of circular bed = 33 cm area of circular bed = ( 33 ) 2 â  „ 4 ï € space for each plant = 4 cm 2 â ˆ ´ required number of plants = ( 33 ) 2 â  „ 4 ï € ã · 4 = 21.65 = 21 ( approx ) answer c"
divide(circle_area(divide(33, multiply(2, const_pi))), 4)