Question

2. Find the area of a square park whose perimeter is 520 m.
3. Find the area of a triangle whose base and height is 4 cm, 8cm respectively.
4. What is the circumference of a circular disc of radius 18 cm?​

Answer 1

Answer:

perimeter of square =4×side

520/4=side

=130m^2

2) 1/2×b ×h=1/2×4×8

=16cm^2

3) 2¶r = 2×22/7×18

=11308cm^2

Answer 2

Step-by-step explanation:

2. Perimeter of the square park = 520 m

=> 4 × Side = 520 m

Therefore, each side = 520÷4

= 130 m

Area of square park = Side × Side

= (130 × 130) m2

= 16900 m2

3. Area of the triangle = 1/2 × b × h

= (1/2 × 4 × 8) cm2

=( 2 × 8) cm2

= 16 cm2

4. Circumference of the circle = 2πr

= (2 × 22/7 × 18) cm

= (44/7 × 18) cm

= 113.142857 cm

Hope it helps

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