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Vika [28.1K]
3 years ago
7

In a 30cm by 25cm rectangle, a quadrant of a circle of radius 7cm has been cut away from each corner. What is the perimeter of t

he part left? and also what is the area of the part left
​
Mathematics
1 answer:
Anton [14]3 years ago
5 0

Answer:

97.96 cm

596.14 cm²

Step-by-step explanation:

sides become:

  • 30 cm ⇒ 16 cm
  • 25 cm ⇒ 11 cm

and added corners:

  • 4*2πr/4= 2πr = 2*3.14*7 cm= 43.96 cm

then perimeter is:

  • P= 2*16+2*11+43.96= 97.96 cm

the area left is:

  • A= 30*25- 4*1/4*3.14*7²= 596.14 cm²

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Can anybody find the answers to any of these please
Umnica [9.8K]

(A) SAS

<u>Explanation:</u>

According to the figure,

One angle of both the triangles are equal

Two sides of both the triangles are equal

If two sides and one angle are equal, then the given triangles are congruent to each other.

7 0
4 years ago
Could someone please help me?
SpyIntel [72]

Answer:

ab=9 and ac=12

Step-by-step explanation:

3 0
3 years ago
4-(2y-1)=2(5y+9)+y please help quick
stich3 [128]

Step-by-step explanation:Step 1: Simplify both sides of the equation.

4−(2y−1)=2(5y+9)+y

4+−1(2y−1)=2(5y+9)+y(Distribute the Negative Sign)

4+−1(2y)+(−1)(−1)=2(5y+9)+y

4+−2y+1=2(5y+9)+y

4+−2y+1=(2)(5y)+(2)(9)+y(Distribute)

4+−2y+1=10y+18+y

(−2y)+(4+1)=(10y+y)+(18)(Combine Like Terms)

−2y+5=11y+18

−2y+5=11y+18

Step 2: Subtract 11y from both sides.

−2y+5−11y=11y+18−11y

−13y+5=18

Step 3: Subtract 5 from both sides.

−13y+5−5=18−5

−13y=13

Step 4: Divide both sides by -13.

−13y

−13

=

13

−13

y=−1

 Answer: y =-1

7 0
3 years ago
Read 2 more answers
Which of the following is a sensory organ?
Ksenya-84 [330]

Answer:

Eyes

Step-by-step explanation:

I’m pretty sure

3 0
3 years ago
Read 2 more answers
(8 x 3) + (8 x 2) = 8 x (blank + blank)
kakasveta [241]

Step-by-step explanation:

(8 x 3) + (8 x 2) = 8 x (3 + 2)

24 + 16 = 8 * 5

40 = 40

Hope it will help :)❤

8 0
3 years ago
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