Answer:
1.
let equal sides be x
x+x+4=11
2x + 4 = 11
2x = 7; x = 3.5
Semi perimeter= 11/2 = 5.5
area = sqrt(5.5(5.5 - 4) (5.5 - 3.5) (5.5 - 3.5)
=5.5(1.5)(2)(2);
=2 sqrt 8.25; cm 2;
=5.75 cm2
2. Area of 20 is 400cm²
Step-by-step explanation:
hope it's help
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Answers & Comments
Answer:
1.
let equal sides be x
x+x+4=11
2x + 4 = 11
2x = 7; x = 3.5
Semi perimeter= 11/2 = 5.5
area = sqrt(5.5(5.5 - 4) (5.5 - 3.5) (5.5 - 3.5)
=5.5(1.5)(2)(2);
=2 sqrt 8.25; cm 2;
=5.75 cm2
2. Area of 20 is 400cm²
Step-by-step explanation:
hope it's help