Question

3.
The length of a rectangular field is 30 m and its diagonal is 34 m. Find the breadth
of the field and its perimeter.
4. The diagonal of a square
is 12.2 cm. Find its perimeter.​

Answer 1

Answer:

the length of rectangular field is 30m.

diagonal is 34 cm

breadth = √d²-l² = 34²-30²= 1156-900 =√256= 16m

the breadth of the field is 16 m.

the perimeter of rectangular field= 2(l+b) = 2(30+16)

=2(46)

=92m

Step-by-step explanation:

4. the diagonal of square = 12.2 cm.

length of each side = a²+a² = ( 12.2)²= 148.84 cm

a²= 148.84cm

a²=148.84/2 = 74.42 cm

a= √74.42=8.6 cm

perimeter of square 4×side

4× 8.6= 34.4sq cm.