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10)
A
rectangular signboard is measured as 2.1 m wide
and 4.0m long, rounded to the nearest 0.1 m. Find
the interval for its possible
(a) length,
(b) width,
(c) perimeter, (d) area.
Give your answers in the form a appropriate units.
.

Sagot :

Answer:

a) 3.9m to 4.1m

b) 2.0m to 2.2m

c) 11.8m to 12.6m

d) 60.84m to 81.36m

Step-by-step explanation:

c) 3.9+3.9+2.0+2.0=11.8

   4.1+4.1+2.2+2.2=12.6

d) 3.9x3.9x2.0x2.0=60.84

   4.1x4.1x2.2x2.2=81.3604