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Alex787 [66]
3 years ago
11

Please help me with these questions! I have to show work and complete all of this but I'm confused. It is due at 11:59 please he

lp! Can you show it on paper please thank you!!

Mathematics
2 answers:
worty [1.4K]3 years ago
7 0

The answer is in the image. Good luck!

KiRa [710]3 years ago
7 0

Step-by-step explanation:

<em>there's</em><em> </em><em>the</em><em> </em><em>first</em><em> </em><em>like</em><em>,</em><em> </em><em>7</em>

<em>#1</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>one</em><em> </em><em>closest</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>face</em>

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Find the formula for the area A and the perimeter P of the shape shown find the area and perimeter when R is 5 cm find R when A
Ghella [55]

Answer:

1)Area; A = ¼πr²

Perimeter; P = πr/2 + 2r

2)A = 19.63 cm²

P = 17.85 cm

3) r = 8.885 cm

4) r = 14 cm

Step-by-step explanation:

This is a quadrant of a circle. Thus;

Area of a circle is πr². A quadrant is a quarter of a circle. Thus;

Formula for Quadrant Area is; A = ¼πr²

A) Perimeter of a circle is 2πr. Thus, perimeter of a quadrant is a quarter of the full circle perimeter.

Formula for the quadrant perimeter in the image given is;

P = 2πr/4 + 2r

P = πr/2 + 2r

B) When r is 5 cm;

A = ¼π(5)²

A = 19.63 cm²

P = π(5)/2 + 2(5)

P = 17.85 cm

C) when A is 100cm²:

¼πr² = 100

r² = 100 × 4/π

r² = 78.9358

r = √78.9358

r = 8.885 cm

D) when P = 50 cm.

50 = πr/2 + 2r

50 = (½π + 2)r

r = 50/(½π + 2)

r = 14 cm

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