Question

hello friends please give the answer you see in above picture​

Answer 1

Answer:

(a) = 2464 $mm^{2}$

21.2457142857 $cm^{2}$

Explanation:

area of circle = $\pi r^{2}$

radius = 28mm

$\pi = 22/7$

after substituting values ,

$\frac{22}{7} * 28^{2} \\=>\frac{22}{7} * 784\\=> 22 * 112\\=>2464$

hence , (a) = 2464 $mm^{2}$

now 10mm = 1 cm

so 26mm = 2.6 cm

$\frac{22}{7} * 2.6^{2} \\=> \frac{22}{7} * 6.76\\=>\frac{148.72}{7} \\=>21.2457142857$

hence (b) = 21.2457142857 $cm^{2}$

hop this helps you

please mark this as the brainliest