## Monday, February 13, 2012

### Paolo's pythagorean blog post

3 questions from pg. 110-111 #4,#7 #,13

4. Find the height of the pole where the guy wire is attached,
to the nearest tenth of a meter.

10msq+2msq=
100m+4m=
104m
√104m=10.19

7. What is the height of the wheelchair ramp? Give you answer to
the nearest tenth of a centimeter.

80cmsq+79cmsq=
6,400m+6,241m=
12,641m
√12,641m=112.4

13. A cruise ship travels from Port Cassett north at speed of 34km/h
for 2.5 h. Then turns 90° and travels west at 30 km/h for 7.3 h. When it
reaches Green sea island how far is the ship from Port Cassett?

235km

Pythagoras Scribe Edit

1.Answer in a short paragraph and with diagrams

The Pythagorean relationship means that the sum of the two side lengths (a and b)
should equal the hypotenuse ( C ).

2. Solve for the missing side length.

a2+b2=c2
12cm^2+5cm^2=c2
144cm+25cm=
169cm=c2
√169cm=√c2
13cm=c2

The hypotenuse is 13cm

3. Is this a right triangle? Prove it!!!

a2+b2=c2
8cm2+6cm2=c2
(8x8)+(6x6)=
64cm+36cm=
100cm
100cm=√C2
10cm

The hypotenuse is 10cm.