The length of a rectangle is 10 cm. If its perimeter is 28 cm, find the area
Attached Figure / Diagram
A
30cm\(^2\)
B
40cm\(^2\)
C
60cm\(^2\)
D
80cm\(^2\)
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
perimeter = 2( length + breadth)
→ 28 = 2 (10+ b)
14 - 10 = b
b = 4
Area = length x breadth
10 x 4 → 40cm\(^2\)
Source: WAEC / JAMB / NECO Classroom Archive (Record #64829)