Question
Which pH level in lakes and rivers is likely
to negatively impact the reproduction of most fish species?Solution
Reproduction of most fish species is unlikely when the pH drops below 4.9 due to the deleterious effect of acidity on the reproductive cycle of fish.
The radius of a sphere is 12cm. The surface of the sphere is what percent of its volume
If O is circumcentre of acute angled triangle ABC, if ∠ OBC = 180 then ∠BAC = ?
In the figure given below, AC = 16 cm and BF = 5 cm. If AE:CE = 5:3, then find the perimeter of ΔABC.
- Two chords PQ and RS intersect each other at point ‘A’ inside the circle. If PQ = 5 cm, RA = 3.6 cm and AQ = 1.8 cm, find the length of RS.
In a triangle PQR, ST is drawn parallel to side QR. If PS = 8 cm, QS = 5 cm and PT = 14 cm, then find PR.
If O is circumcentre of acute angled triangle ABC, if ∠ BAC = 40 ˚ then ∠BOC = ?
A triangle ABC is inscribed in a circle with radius 10 cm. The sides of the triangle are AB = 12 cm, BC = 16 cm, and AC = 20 cm. Find the area of the tr...
A sector of a circle has a central angle of 120°. The radius of the circle is 14 cm. Find the area of the sector.
In a triangle ABC, the incenter is at O. Find angle BAC if angle BOC=115°.
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