1. Construct triangle XYZ in which XY = 45 cm. YZ=5 cm and ZX=6 cm
2. Construct an equilateral triangle of side 5.5 cm.
3. Draw triangle PQR with PQ=4 cm, QR = 3.5 cm and PR= cm. What type of triangle is this?
4. Construct triangle ABC such that AB=25 cm. BC=6cm and AC=65cm. Measure angle B.
Answers
Answered by
1
Answer:
Observations= X,X+2,X+4,X+6,X+8
No of observations=5
Mean of observations= 13
Sum of observations= Mean of observations × No of observations
= 13 × 5 = 65.
Sum of observations in terms of X = X+2+X+4+X+6+X+8 = 5X+20
According to the problem
5X + 20 = 65
5X = 65 — 20
5X = 45
X = 9
The value of X is 9.
Similar questions