makayladurham19
19.10.2019 •
Mathematics
Aladder is sliding down a wall so that the distance between the top of the ladder and the floor is decreasing at a rate of 9 feet per second. how fast is the base of the ladder receding from the wall?
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Ответ:
Each triangle:40 cm²
Kite : 80cm²
Step-by-step explanation:
The area of a triangle is
1/2bh
The height of the triangle is
h=1/2(10)=5cm
and the base is 16 cm.
The area of each triangle is
= 1/2(16)(5)=40cm^2
2. The total area of the kite is 2 times the area of one triangle.
= 2*40=80cm^2