Question

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3. Find the area of a square of side (1) 10 m (ii) 21 cm (iii) 0.5 m (iv) 4-m.
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4. (1) Find the length and perimeter of a rectangle of area 900 m2 and breadth 20 m.
(11) Find the breadth and perimeter of a rectangle of area 962 cm2 and length 26 cm.
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Answer 1

Step-by-step explanation:

3.(1) Side = 10m

Area of square = 10×10=100m^2

(2) Side = 21

Area of square = 21×21=441m^2

(3) Side = 0.5m

Area of square = 0.5×0.5=0.25m^2

(4) Side=4m

Area of square = 4×4=16m^2

4. (1) Breadth = 20m

Area of rectangle = 900m^2

L×B= 900

L×20= 900

L= 900/20=45

Perimeter = 2(L+B)= 2(45+20)=2×65=130

(2) Length = 26cm

Area of rectangle =962cm^2

L×B= 962

26×B= 962

B= 962/26= 37cm

Perimeter = 2(L+B)= 2(26+37)= 2×63=126