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10 of 10
Work out the area of a rectangle with base, b = 38mm and perimeter, P =
100mm.
b


10 Of 10 Work Out The Area Of A Rectangle With Base B 38mm And Perimeter P 100mm B class=

Sagot :

Let the height of the rectangle = h

2b + 2h = 100

2(38) + 2h = 100

2h = 100 - 76

h = 12mm

area of rectangle = base x height

= 38 x 12

= 456mm²

Answer:

456mm²

Step-by-step explanation:

using formula;

b/2( P - 2b) = A

substitute values