One side of a rectangle is 8cm and the diagonal is 10cm. What is the area of the rectangle?
A
80cm2
B
48cm2
C
40cm2
D
36cm2
E
24cm2
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
From the diagram above, using Pythagoras' theorem
y = \(\sqrt{10^2 - 8^2}\) = \(\sqrt{36}\) = 6 cm
Area of Rectangle = length x breath = 6 x 8 = 48 cm\(^2\)
Source: Myschool Past Questions Archive (Record #23812)