Approach please .

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

Options ?

150 ?

correct.. solution please

Option a ..?

ANSWER IS (c)

that's √2xy in last 3rd line

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

8/3?

26/3

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

√793*44/7?

PFA the Approach :

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

where are P and Q points and what is the use of EF ?

Use this : CP^2 = AP x PB

and EQ^2 = AQ x QB .

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

Determine the area under the archway that was constructed on a straight base AB whose length is 4feet and with circular arcs AC and AB.

A) 16π/3

B) 16π/3-4√3

C)8π/3

D)16π/3+4

this has been told earlier by Raman sir

If side of square is 3 what is the area of circle?

PFA the solution

In equilateral triangle ABC with side 16. If ADis perpendicular to BC and AE is congruent to ED then BE=?

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 ]

In a trapezoid AD=65,BC=52 ,AB=12abd CD=5. What is the area of traoezoid.

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

Find the area of the shaded region

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.

in a triangle ABC, AB=10, BC=14 and AC=18. and D lies on AC with BD=10. What is the ratio of AD:CD.

a)14:10

b)18:14

c)22:11

d)38:16