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Chapter 3: Q.14 (page 164)

Calculate the value of x for the given triangle of the perimeter is 30cm.

Short Answer

Expert verified

The value of x be 8cm.

Step by step solution

01

Step 1.  Apply the concept of perimeter of triangle

In this type of question, use the concept of perimeter of the triangle that is the formula is

Perimeter=sumof鈥�all鈥�sides.

02

Step 2.  Finding the value by explaining the statement

Since,

The sides of the triangle bex,10cm,12cm.

The perimeter of the triangle be 30cm.

03

Step 3.  Finding the value of x.

Now, the value of x by using the perimeter,

Simply subtract 12to both sides of the equation of perimeter,

Perimeter=sum鈥�of鈥�all鈥�sides30=x+10+1230=x+2230鈭�22=x+22鈭�228=xx=8

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