Question

can you tell this question answer
​

Answer 1

Answer:

(15×8) metre square=120 metre square

2(15+8) metre =46 metre

so the answer is option a 15 metre

Answer 2

perimeter =2(l+b)

46=2(l+b)

l+b=23

l=23-b

area =l×b

120=(23-b)×b

120=23b-b^2

b^2-23b+120=0

b^2-(8+15)b+120=0

b^2-8b-15b+120=0

b(b-8)-15(b-8)=0

(b-8)(b-15)=0

b=8m

or, b=15m

so, l=23-b

l=23-8

=15m

or, l=23-15

=8m

doagonal =root l^2+b^2

=root (15)^2+(8)^2

=root (225+64)

=root 289

=17cm