Question

If P=42 , B=7.4 and what is L and A of a rectangle

Answer 1

Answer:

2(L+B)=42

L+7.4=21

you'll get L

then area = L*B

Answer 2

The length is 13.6.

The area is 100.64.

Step-by-step explanation:

The perimeter of a rectangle is, P = 2 (L + B).

The area is, A = L × B

Given:

P = 42

B = 7.4

Compute the length as follows:

$P = 2 (L + B)\\42=2(L+7.4)\\21=L+7.4\\L=13.6$

The length is 13.6.

Compute the area as follows:

$A=L\times B\\=13.6\times 7.4\\=100.64$

Thus, the area is 100.64.

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