Question

The perimeter of a rectangle is 81m and it's breadth is 12m .Find its length and area

Answer 1

HEYBUDDY!!

HERE'S THE ANSWER..
.........................................................
PERIMETER =81 m

BREADTH = 12 m.

TO FIND LENGTH AND AREA, WE DO...

2(L+B)=P



$2(12 + l ) = 81$
$24 + 2l = 81$
$2l = 57 \\ \frac{57}{2 } = l$
$a = \frac{57}{2} \times 12 = 342 m {}^{2}$
$hope \: it \: help \: you$ mark it as a brainliest......

thanks

Answer 2

LET LENGTH BE x.

PERIMETER = 2(LENGTH+BREADTH)

81 = 2(x + 12)

2x+24 = 81

2x = 57

x = 57/2

AREA = 57/2×12

= 57×6

= 342 sq.m