Question

if area=450 sq cm diagonal=30 cm find perimeter

Answer 1

Answer:

900 cm

Step-by-step explanation:

D =D²

30 cm =30 cm

Area of square =d1×d²

=30 cm × 30 cm

= 900 cm²

Answer 2

Answer:

Required  perimeter is 90 cm.

Step-by-step explanation:

Given-

area=450 sq cm

diagonal=30 cm

We have to find the perimeter

Solution-

As we know that,

Perimeter (P)=2(l+b)

First we have to find the value of (b) breadth

As we know that,

Breadth (b)=$\frac{Area}{lenght}$

                  $= \frac{450}{30}$

Breadth (b) $=15$ cm

Now,

    Perimeter (P)=2(l+b)

    Breadth (b) $=15$ cm

    diagonal (l) =30 cm

Put the given values in these formula we get

      Perimeter (P)=2(30+15)

                            =2(45)

                            =90 cm

Hence,Required  perimeter is 90 cm.