Question

151. Find the perimeter of this triangle

X
(y+9)cm
(3y+3)cm
(4y+6)cm
152. Find the perimeter of the following figure
(4a-100cm
(2a-15)cm
2a+40)cm
153 Find the area of this parallelogram​

Answer 1

The perimeter is the sum of all the sides of the figure⇒

151

`P=a+b+c+d...`

`P=(y+9)+(3y+3)+(4y+6)=y+9+3y+3+4y+6=8y+18`

152

`P=a+b+c+d...\\P=(4a-100)+(2a-15)+(2a+40)=4a-100+2a-15+2a+40=\\=8a-75`

153

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