The area of the triangle is, ? cm2.
Answer:
Step-by-step explanation:
Perimeter is:
Comparing the value:
Are formula:
Replacing values:
Answer:
60cm²
Step-by-step explanation:
To find :-
We know that Perimeter is the sum of sides of a triangle. Here the perimeter is 40cm .
→ 2x - 4 +5x - 13 + x + 9 = 40cm .
→ 8x - 8 = 40cm
→ 8x = 40+8 cm
→ 8x = 48 cm
→ x = 6cm .
We know that the area of the triangle is half the product of base and height .
→ A = 1/2 × b × h
→ A = 1/2 × 8cm × 15cm
→ A = 60cm²
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