Question

Q80 The length and breadth of a rectangle
are as 4:3. The diagonals a measure
25 cm. Then perimeter = ?​

Answer 1

Answer:

length =4x

breadth = 3x

by pythagoras theorem

(4x)^2+(3x)^2=(25)^2

16x^2+9x^2=625

x=5

then,

l=4x=4×5=20

b=3x=3×5=15

perimeter=2 (l+b)

=2 (20+15)

=2 (35)

=70 ans

hope u understand

thank you

for your nice question....