Answers

2014-11-19T17:20:09+08:00

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P=2s+b
s-side
b=base
42=2(10)+b
42=20+b
b=22 units

There is a theorem in Math, which is that the side is the same as the radius.
radius=10 units

Diameter is twice the radius so:
diameter=20 units.

The diameter represents the altitude of the triangle
A=1/2bh
A=1/2(22)(10)
A=1/2(220)
A=110 units²

Hope this helps =)
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2014-11-21T00:32:55+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Sol'n:
P=a+b+c
42=10+b+c  -----(eq.1)
Since Isosceles triangle.Therefore i can say that (b=c).
42=10+2b
b= 16 units
c=16 units

A=(0.5)(10)(√16²-5²)
A=76 square units.

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