Answer:
Step-by-step explanation:
5^2+8^2=c^2
25+64=89
89=c^2
square root of 89 is 9.43
9.43=the square root of c^2
Answer:
(1) 9
(2) 
(3) 6(
)
Step-by-step explanation:
From the question,
(1) (
)²
Applyin the law of multiplication of surds
(
)² = (
(2) (
)× (
) =
Also applying the the law of multiplication of surd
(
)×(
) = (
) ( This is an irational answer)
∴ (
)×(
) = 
(3) 2(
)×3(
)
Also applying the law of multiplication of surds i.e Multiply surds to surds and whole number to whole number
= 2×3×(
)×(
)
6×(
) = 6(
The picture in the attached figure
Part 1) <span>
What is the total area of the swimming pool?</span>
we know that
<span>area of the swimming pool=area rectangle-area semi circle
area rectangle=20*36-----> 720 ft</span>²
area semicircle=pi*r²/2
r=18/2----> 9 ft
area semicircle=pi*9²/2----> 127.17 ft²
area of the swimming pool=720 ft²-127.17 ft²----> 592.83 ft²
the answer Part 1) isThe area of the swimming pool is 592.83 ft²Part 2) <span>What is the perimeter of the swimming pool?
</span>
perimeter of the swimming pool=perimeter of rectangle-18 ft+perimeter semi circle
perimeter of rectangle=2*[20+36]---> 112 ft
perimeter semi circle=2*pi*r/2----> pi*r
r=9 ft
perimeter semi circle=pi*9----> 28.26 ft
so
perimeter of the swimming pool=112 ft-18 ft+28.26 ft----> 122.26 ft
the answer Part 2) is122.26 ft