Perimeter of triangle ABC is 50cm, its sides AB, BC, AC are 15cm,10cm,(X+4)cm find the value of X

21

Step-by-step explanation:

the perimeter equals the sum of the 3 sides of the triangle so 50=15+10+x+4

x=50-29

x=21

y/x=18

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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