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The area (A) of a triangle varies jointly as its base (b) and height (h). The area is 20 cm² when the base is 5 cm and the height is 8 cm. What is the height when the area is 35 cm² and the base is 7 cm?​

Sagot :

Answer:

10 cm

Explanation:

First we have to find the k

Given:

a = 20cm², b = 5cm, h = 8cm, k = ?

Formula:

a = kbh

Solution:

20 = k (5)(8)

20 = k (40)

40/20 = k

2cm = k

So the k is 2, next we need to find the Height

Given:

a = 35cm², b = 7cm, h = ?

Solution:

35 x 2 = 70

70 ÷ 7 = 10cm

So that the Height is 10cm

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