Advertisements
Advertisements
प्रश्न
Find the scale factor in each of the following and state the type of size transformation:
Image length = 8cm, Actual length = 20cm.
उत्तर
Image length = 8cm, Actual length = 20cm.
Scale factor = `"Image length"/"Actual length" = (8)/(20)`
Scale factor = 0.4
Since the scale factor < 1 and > 0
⇒ Type of size transformation = reduction.
APPEARS IN
संबंधित प्रश्न
In a right triangle ABC, right angled at B, D is a point on hypotenuse such that BD ⊥ AC , if DP ⊥ AB and DQ ⊥ BC then prove that
`(a) DQ^2 Dp.QC (b) DP ^2 DQ.AP 2 `
In Δ ABC , DE is parallel to BC and `"AD"/"DB" = 2/7` IF AC = 5 .6 , find AE.
Δ ABC is similar to Δ PQR. If AB = 6cm, BC = 9cm, PQ = 9cm and PR = 10.5cm, find the lengths of AC and QR.
An aeroplane is 30m long and its model is l5 cm long. If the total outer surface area of the model is 150 cm2 , find the cost of painting the outer surface of the aeroplane at Rs. 120 per m2, if 5O m2 is left out for windows.
In the figure, PQR is a straight line and PS || RT. If QS = 12cm, QR = 15cm, QT = 10cm and RT = 6cm, find PQ and PS.
In a quadrilateral PQRS, the diagonals PR and QS intersect each other at the point T. If PT:TR = QT :TS = 1:2, show that TP:TQ = TR:TS
Given is a triangle with sides 3 cm, 5 cm and 6 cm. Find the sides of a triangle which is similar to the given triangle and its shortest side is 4.5 cm.
On a map drawn to a scale of 1:25000, a triangular plot of land is right angled and the sides forming the right angle measure 225cm and 64cm.Find: The area of the plot in sq. km.
If figure OPRQ is a square and ∠MLN = 90°. Prove that ∆LOP ~ ∆RPN
In the given figure ΔABC ~ ΔPQR. The value of x is
 |
 |
