All categories

2 years ago

An isosceles triangle has congruent sides of 20 cm. The base is 10 cm. Find the length of the triangle.

1 answer:

5 0

If we draw a line from the vertex to the midpoint of the base we get 2 right angled triangles. So we can use Pythagoras theorem to find the length ( height):-

20^2 = x^ + 5^2
x^2 = 400 - 25 = 375
x = sqrt 375 = 19.36 cm to nearest hundredth.

You might be interested in

Rasheed bought two kinds of candy bars, chocolate and toffee, that came in packages of 2 bars each. He handed out 2/3 of the cho

Contact [7]

Answer:

9 packages of chocolate bars

Step-by-step explanation:

Let he bought c packages of chocolate bars and t packages of toffee bars,

Since, he bought 1 fewer package of chocolate bars than toffee bars.

⇒ c = t - 1 -----(1)

Also, he handed out out $\frac{2}{3}$ of the chocolate bars and $\frac{3}{5}$ of the toffee bars,

If he handed out the same number of each kind of candy bar.

$\implies \frac{2}{3}\times c=\frac{3}{5}\times t$

$10c = 9t$ ( By cross multiplication )

$\implies t=\frac{10}{9}c$ ( Division property of equality )

From equation (1),

$c=\frac{10}{9}c-1$

$1=\frac{10}{9}c-c$

$1=\frac{10c-9c}{9}$

$1=\frac{c}{9}$

$\implies c = 9$

Hence, he bought 9 packages of chocolate bars.

4 0

2 years ago

Hector can paint (128

marysya [2.9K]

Answer:

Step-by-step explanation:

128/8= 16

8 0

2 years ago

40.6 in numerical form

oksano4ka [1.4K]

What's your question so I could help?

6 0

2 years ago

Which of the following equations describes the line shown below? check all that apply

Ierofanga [76]

The equation of the line can be written as:

y - 3 = 2( x + 2)
and
y - 9 = 2(x - 1)

So the answers are E and F

Hope this helps :)

6 0

2 years ago

100 yards equals how many feet?

Leno4ka [110]

300 feet.
~IndexFinger :)

8 0

2 years ago

Read 2 more answers