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Anna11 [10]
3 years ago
15

Work out the area of a rectangle with base, b = 20mm and perimeter, P = 42mm.

Mathematics
2 answers:
polet [3.4K]3 years ago
6 0

Answer:

Let the length of the rectangle be 'l'

We have,

Perimeter of rectangle, P = 42mm.

or, 2(l+b) = 42\\or, l +b = \frac{42}{2} = 21\\or, l + 20 = 21\\or, l = 1mm\\

Area of rectangle = lb = 1(20) = 20mm^{2}

Zarrin [17]3 years ago
3 0

Answer:

20mm

Step-by-step explanation:

base=20mm

base x 2 because there are two long lines

20 x 2 = 40

42-40=2

amount needed on either side to balance

height=1mm

20 x 1 = 20mm

area = 20mm

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Segment PH is graphed on the coordinate grid where P is (-31,8) and H is (29,-10). Point E is the midpoint of segment PH. If poi
maks197457 [2]

Answer:

The coordinates of point A are (-11 , 2)

Step-by-step explanation:

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- The coordinates of point H are (29 , -10)

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→ x=\frac{x_{1}+x_{2}}{2} and y=\frac{y_{1}+y_{2}}{2}

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- Point A is graphed \frac{2}{3} of the way along the segment from P to E

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  is 3 parts, then the distance from A to E is "3 - 2" = 1 part

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→ x=\frac{x_{1}m_{2}+x_{2}m_{1}}{m_{1}+m_{2}} and y=\frac{y_{1}m_{2}+y_{2}m_{1}}{m_{1}+m_{2}}

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