3 years ago

The perimeter of a triangle is 64cm ,the sides are the ratio 6:5:5 , work out the area of the triangle

1 answer:

4 0

The area is 192 cm^2

the sides are 20 20 24 with the base being 24

to figure out the height you have to use Pythagorean theorem of the triangle cut in half so 12^2 + b^2 = 20^2
b= 16 = height

b*h* .5= area 16* 24* .5= 192

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Complete the sentence to explain how to use mental math to express 12/25 as a percent

Vlada [557]

Answer: It's 48%. See below.

Step-by-step explanation:

By definition, percent means out of a hundred. For instance, 10 percent is 10 out of 100.

One way to make $\frac{12}{25}$ a percent is by making the denominator 100. In order to do so, multiply the numerator and the denominator by 4, since 25 times 4 is 100.