Question

Area of a triangle is 1256 sq mm.Find the base of the triangle if its height is equal to 31.4 mm. *
1 point
80cm
80 mm
8mm
8cm
​

Answer 1

Answer:

80 cm

Step-by-step explanation:

area of a triangle = 1/2 × base × hight

1256= 1/2 × base × 31.4

base × 31.4 = 1256×2

base = 80cm

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Answer 2

Step-by-step explanation:

$area = \frac{1}{2} \times base \times height$

$base = {?} \\ height = 31.4mm \\ area = 1256 {mm}^{2}$

$1256 = \frac{1}{2} \times base \times 31.4 \\ base = \frac{1256 \times 2}{31.4} \\ base = \frac{2512}{31.4} \\ base = 80$

Here base is 80mm because everything here is in mm.

So, mm^2/mm=mm

So, answer is 80mm and 8cm

As here there are both options, prefer the answer as 80mm.

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