Question

the atea of a rectangular shaped photo is 820sq and its width is 20cm what is lenght? also find its perimeter?​

Answer 1

Answer:

=2l+b

820=2(l+20)

820=2l+40

780=2l

l=780/2

l=390

Answer 2

The length of the rectangular shaped photo is 41 cm and its perimeter is 122 cm.

Step-by-step explanation:

The area of a rectangular shaped photo = A = 820 cm²

Width = W = 20 cm

Length = L

Area = 820

=> L x W = 820

=> L x 20 = 820

=> L = $\frac{820}{20}$ = 41 cm

Perimeter = 2(L + W) = 2(41 + 20) = 122 cm

Hence, the length of the rectangular shaped photo is 41 cm and its perimeter is 122 cm.