WAEC - Mathematics (2021 - No. 24)
The diagonal of a rhombus are 12cm and 5cm. calculate its perimeter
26cm
24cm
17cm
34cm
คำอธิบาย
Perimeter of a Rhombus = 4L or 2√( d1\(^2\) + d2\(^2\))
P = 2√(12\(^2\) + 5\(^2\))
P = 2√(144 + 25)
P = 2√169 = 2 * 13
P = 26cm