Find the obtuse angle ÐABD, if area of triangle ABD, as shown in figure, is 8.75 cm^{2}.

Options ?

150 ?

correct.. solution please

What is the length of BC in right traingle ABC if AD is peroendicular to BC and AD=4 and BD=6

How many 8cm by 8cm tiles would it take to completely tile the floor of a 44m by 52m room?

357500?

Number of tiles = Area of the floor / ( Area of a tile )

In circle O, chords AB and CD intersect at right angles at E. If AE=20 EB=36 and CE=24 what is the perimeter of circle

In a circle, AB is a diameter. Chords CD and EF are perpendicular to AB. The lengths AP, PQ, and QB are5,7,9respectively. Determine the sum of CP and EQ.

a) 4√5+2√3

b)2√5+12√3

c)4√5+6√3

d) √5+√3

The smallest angle of a rhombus is half the measure of the larger angle. Tthe shorter diagonal is 20cm. Determine the perimeter of rhombus.

A) 40

B)60

C)80

D)100

AD ( Altitude of the triangle ) = AB sqrt{3}/2

AD = 16sqrt{3}/2 = 8sqrt 3

AE = ED = 4 sqrt{3}

BE = sqrt { DE^2 + BD^2 } = sqrt {[ 8^2 + 4(sqrt3)^2 ]

The sum of length of three sides of a right angle triangle is 26. The sum of squares of the lengths of three sides is 288.determine the area of triangle.

A)13

B)15

C)18

D)26

in circle O , chords CD and AB intersect at right angles at E. if CE=8 and DE=6, AE = 24 What is the radius of circle.