Question

The area of a rhombus is 105 cm².If its altitude is 7 cm then its perimeter is​

Answer 1

Step-by-step explanation:

ar of rhombus=1/2×d1×d2

105 =1/2×7×d2

105×2÷7=d2

15×2=d2

30=d2

perimeter of rhombus =4a =