Question

7. What is the length of a rectangle if the
width is 8 cm and the diagonal is 17 cm?​

Answer 1

Answer:

15

Step-by-step explanation:

according to theorem

Answer 2

Answer :

• Length of rectangle is 15cm

Given :

• Width = 8cm
• Diagonal = 17cm

To find :

• Length of rectangle

Solution :

As we know that,

Pythagoras theorem,

• l² + b² = d²

Where , l is length, b is breadth (width) 8cm and d is Diagonal 17cm

》l² + b² = d²

》l² + (8)² = (17)²

》l² + 64 = 289

》l² = 289 - 64

》l² = 225

》l = √225

》l = 15cm

Hence, Length of rectangle is 15cm

More Explanation :

• Perimeter of rectangle = 2(l + b)
• Area of rectangle = length × breadth
• Diagonal = √l² + b²