Question

find the area of the triangle whose perimeter = 28cm. one of the side is 4cm the difference of the other two sides is 3cm​

Answer 1

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Answer 2

perimeter of triangle is 28 cm

one side is 4cm

let other side be x

and third side be x+3

Step-by-step explanation:

perimeter =28

4+x+x+3 = 28

7+ 2x =28

2x = 28 - 7

x = 21÷2

x =10.5

second side is 10.5

third side is x+3=10.5+3= 13.5

area if triangle 1/2 × b × h

1/2 ×4 × 13.5

2×13.5

27 answer