The length of a rectangle is 12 cm and the length of its diagonal is 15 cm. Find the area of the rectangle.
POST THE WORKING PLEASE
Answers
Answered by
7
Step-by-step explanation:
Rectangle
Solve for area
A=108cm²
l Length
12
cm
d Diagonal
15
cm
Answered by
1
Answer:
GIVEN
The length of the rectangle = 12cm
The length of its diagonal = 15cm
TO FIND
The area of the rectangle
SOLUTION
length of diagonal of a rectangle = √{(length)² + (breadth)²}
d² = l²+ b² .....(squaring both the sides)
15² = 12² + b²
b² = 15² - 12²
b² = (15 + 12)(15 - 12)
b² = 27 × 3
b = √81
b = 9
area of a rectangle = length × breadth
= 12 × 9
= 108 cm²
Hence, the area of the rectangle is 108 cm².
Attachments:
Similar questions