Question

find the missing value​

Answer 1

Answer:

The base of triangle is 80 mm .

Step-by-step explanation:

Given -

Height = $31.4\:mm$

Area of triangle = $1256\:mm^{2}$

To find -

Base of triangle

Solution -

As we know that,

Area of triangle = $\frac{1}{2}\times base \times height$

Let, height is x .

Put the given value in these formula we get

$1256=\frac{1}{2} \times x \times 31.4$

$x = \frac{1256 \times 2}{31.4}$

$x = \frac{12560 \times 2}{314}$

Divide 12560 by 314 we get

$x = 40 \times 2$

$x=80$

∴ The base of triangle is 80 mm .