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1 year ago

The area of a triangle is 48cm^2. The height of the triangle is 6cm. Calculate the length of the base

1 answer:

5 0

$\textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh ~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ h=6\\ A=48 \end{cases}\implies \begin{array}{llll} 48=\cfrac{1}{2}(b)(6)\implies 48=3b \\\\\\ \cfrac{48}{3}=b\implies 16=b \end{array}$

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natali 33 [55]

Answer:

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Step-by-step explanation:

We are given the following in the question:

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2 years ago

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kogti [31]

Answer:

r = 6

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

PR² = PQ² + QR² , substitute values

(r + 4)² = r² + 8²

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8r + 16 = 64 ( subtract 16 from both sides )

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2 years ago

The difference between two numbers is 9. The first number plus twice the other number is 27. Find the two numbers.

Ad libitum [116K]

X - y = 9
x + 2y = 27
You can subtract the top equation from the bottom
3y = 18
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x = 15
The two numbers are 15 and 6

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