Question

4) The perimeter of a rectangular map of
the world is 270 cm. It is 90 cm in height.
How wide is it?​

Answer 1

Answer:

45cm

Step-by-step explanation:

Perimeter = 2(l+b)

270 = 2(90+b)

270 = 180+2b

2b = 270-180 = 90

b = 90/2 = 45cm

Answer 2

Answer:

Step-by-step explanation:

Perimeter = 270 cm                

Height = 90cm

so width = X

P = 2 × (L + B) = 2 × ( 90 + X)

So 270 = 2 × ( 90 + X)

270 = 180 + 2X

270 - 180 = 2X

90 = 2X

So , X = 90/2 = 45              so the width of the map is 45cm.

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