Question

area
A rhombus shaped sheet with perimeter 40 cm and one diagonal 12 cm,is painted on
both sides at the rate of Rs.5 per m2. Find the cost of painting,
10.
Find the area of the trapezium PQRS with
height PQ given
5 m
in.
12 m
7 m​

Answer 1

Answer:

Base(b) given 12cm

and we need height (h)

so apply p.T in triangle STR

IN △STR

⇨TR = √(13²-5²)

⇨TR = √ (169-25)

⇨TR = √144

⇨TR = 12 m

Now area if the trapezium sheet is given by

½ × b × h

½×12×12

6×12

72m²

Now total area painted that is the area that painted on both side is given by

2 times of 72

⇨2×72

⇨144m²

Now use unitery method

⇨1m²=$5

so,

⇨144m² = $(144 × 5)

⇨$720

Note here $ means rupess. ✔✔✔✔✔✔✔