3 years ago

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Mathematics

1 answer:

aivan3 [116]3 years ago

6 0

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Find the circumference and the area of a circle with diameter 7 ft

defon

Area formula: pi * radius * radius
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3.5*3.5*pi=12.25pi square feet

Circumference formula: pi * diameter

7*pi=7pi feet

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The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm2/m

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Answer:

The base is reducing at a rate of 3.4cm per min.

Step-by-step explanation:

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Area of a Triangle, $A= \frac{1}{2}bh$

When $A=190 cm^2, h=10cm$

$190= \frac{1}{2}*b*10\\b=38cm$

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The base is reducing at a rate of 3.4cm per min.

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The answer is 0.40 or 0.4

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I think the answer is 51/100

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