The perimeter of a triangle is the sum of its side lengths.
The perimeter of the triangle is: 
<u>The sides of the triangle are:</u>
Side 1 = (8d - 3) cm
Side 2 = (6d + 2) cm
Side 3 = (7f + 8) cm
The perimeter (P) is calculated as:
P = Side 1 + Side 2 + Side 3
So, we have:

Remove brackets

Collect like terms


Hence, the perimeter of the triangle is: 
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Answer:
Area = 30
Step-by-step explanation:
Add the two sides
8 + 4 = 12
Multiply that number by the height
12 × 5 = 60
Divide that number by 2
60 ÷ 2 = 30
21 is greater cause it whole number
Answer:
Step-by-step explanation:
From the given figure, from ΔQRS and ΔTUV, we have
∠Q=∠T(56°(given))
∠R=∠U(83°(given))
∠S=∠V(41°(given))
Thus, by AAA similarity of triangles, ΔQRS is similar to ΔTUV.
Also, All the three angles made by both triangles are equal, and also they are similar thus they have same shape.
Thus, option C and D are correct.
Answer:
I need the following to answer
Step-by-step explanation: