If SQUARE = 3, CIRCLE = 2, then SEMICIRCLE = ?
Answers
Answer:
SECTION A [ 4× 10 = 40]
1. The angles of a triangle are in the ratio 2 : 3 : 4. Find the angles.
2. If one angle of a triangle equals the sum of the other two, the triangle is a right angled
triangle. Prove that.
3. Show that ∆ABC is equilateral if ∠A = x + 300
, ∠B = 3x – 300
and ∠C = 4x – 600
.
4. In ∆ABC, AB = 26 cm, BC = 28 cm and the altitude AD = 24 cm. Calculate AC.
5. Find the cost of fencing a square field of side 35 m at the rate of Rs.40 per metre.
6. The perimeter of a rectangle is
Step-by-step explanation:
If the area of an equilateral triangle is 36√3 cm2
, find the length of its side and its
perimeter.
12. If the area of a rhombus is 96 cm2
and one of its diagonals is 12 cm long, find the
length of the other diagonal. Also, find its perimeter.
13. A 54 cm long piece of wire is bent into the shape of semicircle are bounded by its
diameter. Find its radius.
14. The height of a parallelogram is twice its base. If its area is 450 cm2
, find its base and
height.
15. If the ratio of the base and the h