Need the pleaase  ! the sides of ∆abc are 30 units, 40 units, and 60 units long. the corresponding sides of ∆xyz are r times as long as the sides of ∆abcthe expression that gives the perimeter of ∆xyz is 130/r130r130r*r65rif the area of ∆abc is n square units, the area of ∆xyz is square unit nnrn(r * r)n + r

Part A. Option B.

Part B. Option C.

Step-by-step explanation:

The sides of ΔABC are 30 units, 40 units and 60 units long.

The corresponding sides of ΔXYZ are r times as long as the sides of ΔABC.

Therefore sides of ΔXYZ will be 30r units, 40r units and 60r units.

Perimeter of ΔXYZ = 30r + 40r + 60r = 130r

Option B. is the answer.

If the area of ΔABC is n square units then we have to find the area of ΔXYZ.

Since all sides of ΔXYZ are r times of ΔABC, so area of ΔABC =

Area of ΔXYZ =

= n(r)²

Option C is the answer.

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18. g

20. h 30 degree turn.

21. d 90 degree angles

and also 19 is a. a sphere not a cirlcle

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