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A rectangle has a perimeter of 18. The height of the rectangle is 4 cm. What is the area of the rectangle?

2 Answers

5 votes
20 cm, I think
The perimeter is 18 and the height is 4 cm.

4 cm x 2 = 8
We are multiplying it by two because there are two side in a rectangle that are the same height

18 - 8 = 10
We are finding the length of the rectangle
10\2 = 5
The length of the rectangle is 5

5 x 4 = 20
That is the area
User Benjamin Dunphy
by
8.2k points
2 votes

Answer:

20

Explanation:

Perimeter of rectangle= 2l+2h so 2l+2(4)=18. SO 2l=10. l=5

Area=bh

(5)(4)=20cm

User Pedro Tavares
by
7.1k points

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