How many plants will be there in a circular bed whose outer edge measure 33 cms, allowing 4 cm2 for each plant ?	Choose the correct answer:  A) 18  B) 750  C) 21  D) 120  E) none of these

Rationale: "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"
Answer: C