1. The area of a rhombus is 60 cm². One diagonal is 10 cm. The other diagonal is _____cm *
a. 6
b. 12
c. 3
d. 24
2. The area of a trapezium is 480 cm², the distance between two parallel sides is 15 cm and one of the parallel side is 20 cm. The other parallel side is ____cm *
a. 20
b. 34
c. 44
d. 50
3. If the length of a diagonal of a quadrilateral is 4cm and the perpendiculars to the diagonal are 1cm and 2cm, the area is ____cm² *
a. 6
b. 12
c. 3
d. 8
4. The area of the trapezium with parallel bases 2cm and 4cm and the distance between them is 3cm is ____cm² *
a. 9
b. 6
c. 7
d. 24
5. The area of a parallelogram of base 6cm and height 2cm is ____cm² *
a. 8
b. 6
c. 12
d. 16
6. A rectangular wire of length 40 cm and breadth 20 cm is bent in the shape of a square. The side of the square is _____cm *
a. 10
b. 20
c. 30
d. 40
This is a required question
7. The area of a rhombus whose diagonals are of lengths 10 cm and 8.2 cm is ____cm² *
a. 41
b. 82
c. 410
d. 820
This is a required question
8. The area of a trapezium is 40 cm². Its parallel sides are 12 cm and 8 cm. The distance between the parallel sides is _____cm *
a. 1
b. 2
c. 3
d. 4
Answers
Answered by
1
Answer:
1) 110 cm (options of 1st one are wrong)
2) 20 cm
3) 6 cm^2
Answered by
2
Step-by-step explanation:
1) area of rhombus= b1×b2.
60cm^2=10×b2
60/10 cm=b2
6cm=b2.
2) area of trapezium=480cm^2
height=15cm
one of the parallel side=20cm
According to question,
Area of trapezium=480cm^2
1/2(b1+b2)×h=480cm^2
1/2(20+b2)×15=480cm^2
1/2(20+b2)=480/15
1/2(20+b2)=32
20+b2=32×2
20+b2=64
b2=64-20
b2=44.
3) area of quadrilateral=1/2(H1+H2)×d
area of quadrilateral=1/2(1+2)×4
area of quadrilateral=1/2×3×4
area of quadrilateral=1/2×12
area of quadrilateral=6.
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