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leonid [27]
3 years ago
14

What is the area of a circle if d =7cm​

Mathematics
1 answer:
RideAnS [48]3 years ago
4 0

Answer:

49π / 4

Step-by-step explanation:

πr²

pi x radius²

radius = d ÷ 2 = 3.5

49π / 4

☺️

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11/ 42 Marks
amm1812

Answer:

(a)x=128 degrees

(b)\angle APD\neq 116^\circ

Step-by-step explanation:

\angle ABD+\angle CBD =180^\circ$ (Linear Postulate)\\\angle ABD+116^\circ =180^\circ\\\angle ABD=180^\circ-116^\circ\\\angle ABD=64^\circ

(a) Now:

\angle AOD=2 \times \angle ABD$ (Angle at the centre is twice the  angle at the circumference)\\x=2 \times 64^\circ\\x=128^\circ

(b)

\angle APD=2 \times \angle ABD$ (Inscribed Angle Theorem)\\\angle APD=2 \times 64^\circ\\ \angle APD=128^\circ

\angle APD\neq 116^\circ

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3 years ago
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Between 2005 and 2008, the average rate of inflation was about3.4 per year. If a cart of groceries cost $140 in 2005, what did i
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The formula is
A=p (1+r)^t
A future value?
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3 years ago
One number is one-fifth of another number. The two numbers total 18. Find the numbers
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Answer:

One number is 17 and the other is 85.

Step-by-step explanation:

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