Question

the permeter 480 metetrlemgthof angle150m calucate the bearth

Answer 1

perimeter
$perimeter = 2{l + b}$
480=2(l+b)
480=2(150+b)
480/2=150+b
240=150+b
b=240-150
b=90

Answer 2

perimeter of rectangle =2( l+b)
480 = 2(150+b)
480 = 300+2b
480-300 = 2b
180 = 2b
180÷2 = b
90m = b
breath =90m
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