ICSE Class 7 Answered
1. Find the area of a rhombus having each side equal to 20 cm and of its diagonals equal to 24 cm.
Asked by inhindia727 | 10 Nov, 2018, 10:48: AM
Expert Answer
According to the question,
AB = BC = CD = AD = 20 cm
Consider, DB = 24 cm
As diagonals of rhombus bisect each other.
DO = OB = 12 cm
In triangle AOB,
AO2 + OB2 = AB2
AO2 + 122 = 202
AO2 = 400 - 144 = 256
AO = 16 cm
Diagonal AC = 16 × 2 = 32 cm
Area of rhombus = 
Answered by Sneha shidid | 12 Nov, 2018, 11:28: AM
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