Question

using heron's formula, 1.8m,8m,8.2m

Answer 1

See the Attachment

I have given the Answer in attachment

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Answer is 3.6m

Answer 2

The area is 7.2 m².

Step-by-step explanation:

Given : Sides 1.8m, 8m, 8.2m.

To find : Area using heron's formula ?

Solution :

Heron's formula is $A=\sqrt{s(s-a)(s-b)(s-c)}$

Where, s is semi perimeter with formula

$s=\frac{a+b+c}{2}$

Here, a=1.8, b=8, c=8.2

Substitute the value,

$s=\frac{1.8+8+8.2}{2}$

$s=\frac{18}{2}$

$s=9$

Put in the heron's formula,

$A=\sqrt{9(9-1.8)(9-8)(9-8.2)}$

$A=\sqrt{9(7.2)(1)(0.8)}$

$A=\sqrt{51.84}$

$A=7.2$

Therefore, the area is 7.2 m².

#Learn more

A=8 b=8 c=4 find using herons formula

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