Olympiad Test: Area, Perimeter And Volume - Class 5 MCQ

Area of triangle = 1/2 (b*h)

= 1/2 (13*5)

= 65/2

= 32.5 cm²

area of parallelogram = base x height = 10 x 20 = 200 cm²

πr²
π(4)²
16π
16x3.14
50.24

2πr
2π(4)
8π
8x3.14
25.12

there are 8 boundry lines so  8 * a  = 8*6 = 48 

first break it into a rectangle and square

rectangle of LxB=9x7
square of side=5
so area of rectangle = 9x7 =63
area of square = 5x5 = 25
so total  area = 63 +25
                      = 88

Figures R and S each have 7 black squares, so they have the same area.

A) Area = 96m²

Breadth = 8m

Area = l*b

96 = l*8

l =12

Perimeter = 2(l+b)

= 2(12+8) = 40

B) Area = 110m²

Breadth = 10cm = 0.1m

Area = l*b

110 = l*0.1

l =1100

Perimeter = 2(l+b)

= 2(1100+0.1) = 2200.2

C) Area = 90m²

Length = 15cm = 0.15m

Area = l*b

90 = 0.15*b

b = 600m

Perimeter = 2(l+b)

= 2(0.15+600) = 1200.3

D) Area = 100m²

Length = 25cm = 0.25m

Area = l*b

100 = 0.25*b

b = 400m

Perimeter = 2(l+b)

= 2(0.25+400) = 800.5

There are 6×4=24 squares and each square has an area of = 1cm². So, the area of rectangle = 6×4×1=24cm².

Let's take perimeter of recatngular garden=
2(20m+25m)= 90m

Cost of fencing every 5 m= Rs 27
Cost of fencing 90 m= $ 27/5 ×90
= $ 27× 18= $ 486