Member: civonamzuk

33 Questions
449 Answers

409

+1694

Hard Geometry

An equilateral triangle ABC is partly inscribed in a circle with diameter AB (See diagram).
The area of a triangle outside of a circle is equal to 1 square unit. Find the length of AB.
read more ..

●●●●●●●●●●●

civonamzuk Feb 7, 2022

495

+1694

Geometry

Square ABCD has an area of x cm2. An isosceles triangle AEF has an area of 1/4x cm2. Find the area of a quadrilateral ADGE as a fraction in terms of x.

●

civonamzuk Jun 19, 2021

484

+1694

Geometry

In a triangle ABC, AD = 3 cm, and [ABC] = 162/3 cm2. Find the ratio of [ACD] to [BCD].

●

civonamzuk Jun 9, 2021

551

+1694

Folded rectangle

In rectangle ABCD, AB = 10 and BC = 4. The rectangle is folded so that points A and C coincide, forming the pentagon BCDEF. What is the area of that pentagon?

read more ..

●●●

civonamzuk May 21, 2021

554

+1694

Geometry

Find the length of BC.

●

civonamzuk May 20, 2021

1745

+1694

What's the lowest temperature...

What's the lowest temperature of these three: - 40ºF, 233.16K or - 40ºC ?

Dragonlance ●●●●●●●●●●●●●●●

civonamzuk Jun 12, 2015

1430

+1694

A pair of the identical circles are overlapping each other. Their diameter (D) is 20cm, and the distance between the centers is 10cm. In the

A pair of the identical circles are overlapping each other. Their diameter (D) is 20cm, and the distance between the centers is 10cm. In the grey area, it is possible to inscribe only two golden rectangles - different in size.
Can you find read more ..

heureka ●●

civonamzuk Jun 11, 2015

1624

+1694

How many turquoise squares will be required to build the twentieth figure in this pattern?

How many turquoise squares will be required to build the twentieth figure in this pattern?

read more ..

heureka ●●

civonamzuk May 31, 2015

1803

+1694

The area of the equilateral triangle ABE = sin60o(cm2). Line segment AI = 5cm. BF = EF ; find the area DEGHI.

The area of the equilateral triangle ABE = sin600(cm2). Line segment AI = 5cm. BF = EF =CI =DI ; find the area of the polygon DEGHI.

heureka ●●●●●●

civonamzuk May 29, 2015

2343

+1694

How many triangles are there in the given figure?

Lunar ●●●

civonamzuk May 28, 2015

2432

+1694

A man wishes to reach the island in the middle of an ornamental lake without getting wet. The island is 20 feet from each edge of the pond (

A man wishes to reach the island in the middle of an ornamental lake without getting wet. The island is 20 feet from each edge of the pond (see diagram) and he has two planks each 19 feet long. How does he get across? read more ..

CPhill ●●●●●●●●

civonamzuk May 26, 2015

1096

+1694

You have an equal-arm balance scale and twelve solid bs. You are told that one of the bs has a different weight from all the others, b

You have an equal-arm balance scale and twelve solid b***s. You are told that one of the b***s has a different weight from all the others, but you do not know whether it is lighter or heavier. You can weigh the b***s against each other in the scale balance. read more ..

●

civonamzuk May 26, 2015

+1694

You need to specify which side of a triangle is 20.

civonamzukMar 28, 2015

+1694

////////////////////////////////////

civonamzukMar 28, 2015

+1694

+10

/////////////////////////////////////////

civonamzukMar 28, 2015

+1694

//////////////////////////////////////

civonamzukMar 27, 2015

+1694

////////////////////////////////////////////

civonamzukMar 27, 2015

+1694

//////////////////////////////////

civonamzukMar 27, 2015

+1694

//////////////////////////////////////

civonamzukMar 27, 2015

+1694

/////////////////////////////////////

civonamzukMar 27, 2015

+1694

////////////////////////////////////////////

civonamzukMar 24, 2015

+1694

/////////////////////////////////

civonamzukMar 24, 2015

Username	civonamzuk
Score	1694
Membership
Stats
Questions	31
Answers	359