Step: Find the cost of levelling the garden
Given:
Length of side of garden =30 m
Corresponding altitude =16 m
Rate of levelling the garden =Rs.2 per m2
Area of rhombus = Base × Altitude
=30×16=480 m2
Cost of levelling the garden =Area×rate per m2
=480×2=Rs.960
Hence, the cost of levelling the garden is Rs.960.