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washing machine

closet

room

SOORRRY i found the perimeter then did the U.b and L.b. but actually we're supposed to find the U and L bound and then find the perimeter. i forgot that i repeat my apology. Sorry.:(

it's a rule.

for eg a question says a tyre has a daiameter of 12cm to the nearest cm. calculate upper and lower bound? the 1st thing u do is divide the unit u have by 2 (1/2)=0.5 upper bound =12+0.5=12.5 lower bound=12-0.5=11.5

1 circle=360 DCE is 1/3 of a circle ,so 1/3*360=120 easy beasy;)

wrapping

ceiling

n rolling

singer

safe

generous

electromagnetic waves